18990000

素因数分解:

$2^4\times 3^2\times 5^4\times {\mathrm{211}}^1$

素因数の和:245

約数の個数: 150

約数和(自身を含む): 66725516

約数和(自身を除く): 47735516

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 36, 40, 45, 48, 50, 60, 72, 75, 80, 90, 100, 120, 125, 144, 150, 180, 200, 211, 225, 240, 250, 300, 360, 375, 400, 422, 450, 500, 600, 625, 633, 720, 750, 844, 900, 1000, 1055, 1125, 1200, 1250, 1266, 1500, 1688, 1800, 1875, 1899, 2000, 2110, 2250, 2500, 2532, 3000, 3165, 3376, 3600, 3750, 3798, 4220, 4500, 5000, 5064, 5275, 5625, 6000, 6330, 7500, 7596, 8440, 9000, 9495, 10000, 10128, 10550, 11250, 12660, 15000, 15192, 15825, 16880, 18000, 18990, 21100, 22500, 25320, 26375, 30000, 30384, 31650, 37980, 42200, 45000, 47475, 50640, 52750, 63300, 75960, 79125, 84400, 90000, 94950, 105500, 126600, 131875, 151920, 158250, 189900, 211000, 237375, 253200, 263750, 316500, 379800, 395625, 422000, 474750, 527500, 633000, 759600, 791250, 949500, 1055000, 1186875, 1266000, 1582500, 1899000, 2110000, 2373750, 3165000, 3798000, 4747500, 6330000, 9495000, 18990000]

約数ペア:

[(1, 18990000), (2, 9495000), (3, 6330000), (4, 4747500), (5, 3798000), (6, 3165000), (8, 2373750), (9, 2110000), (10, 1899000), (12, 1582500), (15, 1266000), (16, 1186875), (18, 1055000), (20, 949500), (24, 791250), (25, 759600), (30, 633000), (36, 527500), (40, 474750), (45, 422000), (48, 395625), (50, 379800), (60, 316500), (72, 263750), (75, 253200), (80, 237375), (90, 211000), (100, 189900), (120, 158250), (125, 151920), (144, 131875), (150, 126600), (180, 105500), (200, 94950), (211, 90000), (225, 84400), (240, 79125), (250, 75960), (300, 63300), (360, 52750), (375, 50640), (400, 47475), (422, 45000), (450, 42200), (500, 37980), (600, 31650), (625, 30384), (633, 30000), (720, 26375), (750, 25320), (844, 22500), (900, 21100), (1000, 18990), (1055, 18000), (1125, 16880), (1200, 15825), (1250, 15192), (1266, 15000), (1500, 12660), (1688, 11250), (1800, 10550), (1875, 10128), (1899, 10000), (2000, 9495), (2110, 9000), (2250, 8440), (2500, 7596), (2532, 7500), (3000, 6330), (3165, 6000), (3376, 5625), (3600, 5275), (3750, 5064), (3798, 5000), (4220, 4500)]