81642400

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:327

約数の個数: 144

約数和(自身を含む): 232485120

約数和(自身を除く): 150842720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 61, 70, 80, 100, 112, 122, 140, 160, 175, 200, 224, 239, 244, 280, 305, 350, 400, 427, 478, 488, 560, 610, 700, 800, 854, 956, 976, 1120, 1195, 1220, 1400, 1525, 1673, 1708, 1912, 1952, 2135, 2390, 2440, 2800, 3050, 3346, 3416, 3824, 4270, 4780, 4880, 5600, 5975, 6100, 6692, 6832, 7648, 8365, 8540, 9560, 9760, 10675, 11950, 12200, 13384, 13664, 14579, 16730, 17080, 19120, 21350, 23900, 24400, 26768, 29158, 33460, 34160, 38240, 41825, 42700, 47800, 48800, 53536, 58316, 66920, 68320, 72895, 83650, 85400, 95600, 102053, 116632, 133840, 145790, 167300, 170800, 191200, 204106, 233264, 267680, 291580, 334600, 341600, 364475, 408212, 466528, 510265, 583160, 669200, 728950, 816424, 1020530, 1166320, 1338400, 1457900, 1632848, 2041060, 2332640, 2551325, 2915800, 3265696, 4082120, 5102650, 5831600, 8164240, 10205300, 11663200, 16328480, 20410600, 40821200, 81642400]

約数ペア:

[(1, 81642400), (2, 40821200), (4, 20410600), (5, 16328480), (7, 11663200), (8, 10205300), (10, 8164240), (14, 5831600), (16, 5102650), (20, 4082120), (25, 3265696), (28, 2915800), (32, 2551325), (35, 2332640), (40, 2041060), (50, 1632848), (56, 1457900), (61, 1338400), (70, 1166320), (80, 1020530), (100, 816424), (112, 728950), (122, 669200), (140, 583160), (160, 510265), (175, 466528), (200, 408212), (224, 364475), (239, 341600), (244, 334600), (280, 291580), (305, 267680), (350, 233264), (400, 204106), (427, 191200), (478, 170800), (488, 167300), (560, 145790), (610, 133840), (700, 116632), (800, 102053), (854, 95600), (956, 85400), (976, 83650), (1120, 72895), (1195, 68320), (1220, 66920), (1400, 58316), (1525, 53536), (1673, 48800), (1708, 47800), (1912, 42700), (1952, 41825), (2135, 38240), (2390, 34160), (2440, 33460), (2800, 29158), (3050, 26768), (3346, 24400), (3416, 23900), (3824, 21350), (4270, 19120), (4780, 17080), (4880, 16730), (5600, 14579), (5975, 13664), (6100, 13384), (6692, 12200), (6832, 11950), (7648, 10675), (8365, 9760), (8540, 9560)]