638480960

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4951}}^1$

素因数の和:5012

約数の個数: 112

約数和(自身を含む): 1690493952

約数和(自身を除く): 1052012992

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 806, 832, 992, 1040, 1240, 1612, 1984, 2015, 2080, 2480, 3224, 4030, 4160, 4951, 4960, 6448, 8060, 9902, 9920, 12896, 16120, 19804, 24755, 25792, 32240, 39608, 49510, 64363, 64480, 79216, 99020, 128726, 128960, 153481, 158432, 198040, 257452, 306962, 316864, 321815, 396080, 514904, 613924, 643630, 767405, 792160, 1029808, 1227848, 1287260, 1534810, 1584320, 1995253, 2059616, 2455696, 2574520, 3069620, 3990506, 4119232, 4911392, 5149040, 6139240, 7981012, 9822784, 9976265, 10298080, 12278480, 15962024, 19952530, 20596160, 24556960, 31924048, 39905060, 49113920, 63848096, 79810120, 127696192, 159620240, 319240480, 638480960]

約数ペア:

[(1, 638480960), (2, 319240480), (4, 159620240), (5, 127696192), (8, 79810120), (10, 63848096), (13, 49113920), (16, 39905060), (20, 31924048), (26, 24556960), (31, 20596160), (32, 19952530), (40, 15962024), (52, 12278480), (62, 10298080), (64, 9976265), (65, 9822784), (80, 7981012), (104, 6139240), (124, 5149040), (130, 4911392), (155, 4119232), (160, 3990506), (208, 3069620), (248, 2574520), (260, 2455696), (310, 2059616), (320, 1995253), (403, 1584320), (416, 1534810), (496, 1287260), (520, 1227848), (620, 1029808), (806, 792160), (832, 767405), (992, 643630), (1040, 613924), (1240, 514904), (1612, 396080), (1984, 321815), (2015, 316864), (2080, 306962), (2480, 257452), (3224, 198040), (4030, 158432), (4160, 153481), (4951, 128960), (4960, 128726), (6448, 99020), (8060, 79216), (9902, 64480), (9920, 64363), (12896, 49510), (16120, 39608), (19804, 32240), (24755, 25792)]