640740000

素因数分解:

$2^5\times 3^1\times 5^4\times {\mathrm{59}}^1\times {\mathrm{181}}^1$

素因数の和:273

約数の個数: 240

約数和(自身を含む): 2149187040

約数和(自身を除く): 1508447040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 59, 60, 75, 80, 96, 100, 118, 120, 125, 150, 160, 177, 181, 200, 236, 240, 250, 295, 300, 354, 362, 375, 400, 472, 480, 500, 543, 590, 600, 625, 708, 724, 750, 800, 885, 905, 944, 1000, 1086, 1180, 1200, 1250, 1416, 1448, 1475, 1500, 1770, 1810, 1875, 1888, 2000, 2172, 2360, 2400, 2500, 2715, 2832, 2896, 2950, 3000, 3540, 3620, 3750, 4000, 4344, 4425, 4525, 4720, 5000, 5430, 5664, 5792, 5900, 6000, 7080, 7240, 7375, 7500, 8688, 8850, 9050, 9440, 10000, 10679, 10860, 11800, 12000, 13575, 14160, 14480, 14750, 15000, 17376, 17700, 18100, 20000, 21358, 21720, 22125, 22625, 23600, 27150, 28320, 28960, 29500, 30000, 32037, 35400, 36200, 36875, 42716, 43440, 44250, 45250, 47200, 53395, 54300, 59000, 60000, 64074, 67875, 70800, 72400, 73750, 85432, 86880, 88500, 90500, 106790, 108600, 110625, 113125, 118000, 128148, 135750, 141600, 144800, 147500, 160185, 170864, 177000, 181000, 213580, 217200, 221250, 226250, 236000, 256296, 266975, 271500, 295000, 320370, 339375, 341728, 354000, 362000, 427160, 434400, 442500, 452500, 512592, 533950, 543000, 590000, 640740, 678750, 708000, 724000, 800925, 854320, 885000, 905000, 1025184, 1067900, 1086000, 1180000, 1281480, 1334875, 1357500, 1601850, 1708640, 1770000, 1810000, 2135800, 2172000, 2562960, 2669750, 2715000, 3203700, 3540000, 3620000, 4004625, 4271600, 5125920, 5339500, 5430000, 6407400, 6674375, 8009250, 8543200, 10679000, 10860000, 12814800, 13348750, 16018500, 20023125, 21358000, 25629600, 26697500, 32037000, 40046250, 42716000, 53395000, 64074000, 80092500, 106790000, 128148000, 160185000, 213580000, 320370000, 640740000]

約数ペア:

[(1, 640740000), (2, 320370000), (3, 213580000), (4, 160185000), (5, 128148000), (6, 106790000), (8, 80092500), (10, 64074000), (12, 53395000), (15, 42716000), (16, 40046250), (20, 32037000), (24, 26697500), (25, 25629600), (30, 21358000), (32, 20023125), (40, 16018500), (48, 13348750), (50, 12814800), (59, 10860000), (60, 10679000), (75, 8543200), (80, 8009250), (96, 6674375), (100, 6407400), (118, 5430000), (120, 5339500), (125, 5125920), (150, 4271600), (160, 4004625), (177, 3620000), (181, 3540000), (200, 3203700), (236, 2715000), (240, 2669750), (250, 2562960), (295, 2172000), (300, 2135800), (354, 1810000), (362, 1770000), (375, 1708640), (400, 1601850), (472, 1357500), (480, 1334875), (500, 1281480), (543, 1180000), (590, 1086000), (600, 1067900), (625, 1025184), (708, 905000), (724, 885000), (750, 854320), (800, 800925), (885, 724000), (905, 708000), (944, 678750), (1000, 640740), (1086, 590000), (1180, 543000), (1200, 533950), (1250, 512592), (1416, 452500), (1448, 442500), (1475, 434400), (1500, 427160), (1770, 362000), (1810, 354000), (1875, 341728), (1888, 339375), (2000, 320370), (2172, 295000), (2360, 271500), (2400, 266975), (2500, 256296), (2715, 236000), (2832, 226250), (2896, 221250), (2950, 217200), (3000, 213580), (3540, 181000), (3620, 177000), (3750, 170864), (4000, 160185), (4344, 147500), (4425, 144800), (4525, 141600), (4720, 135750), (5000, 128148), (5430, 118000), (5664, 113125), (5792, 110625), (5900, 108600), (6000, 106790), (7080, 90500), (7240, 88500), (7375, 86880), (7500, 85432), (8688, 73750), (8850, 72400), (9050, 70800), (9440, 67875), (10000, 64074), (10679, 60000), (10860, 59000), (11800, 54300), (12000, 53395), (13575, 47200), (14160, 45250), (14480, 44250), (14750, 43440), (15000, 42716), (17376, 36875), (17700, 36200), (18100, 35400), (20000, 32037), (21358, 30000), (21720, 29500), (22125, 28960), (22625, 28320), (23600, 27150)]