251875000

素因数分解:

$2^3\times 5^7\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:85

約数の個数: 128

約数和(自身を含む): 656248320

約数和(自身を除く): 404373320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 31, 40, 50, 52, 62, 65, 100, 104, 124, 125, 130, 155, 200, 248, 250, 260, 310, 325, 403, 500, 520, 620, 625, 650, 775, 806, 1000, 1240, 1250, 1300, 1550, 1612, 1625, 2015, 2500, 2600, 3100, 3125, 3224, 3250, 3875, 4030, 5000, 6200, 6250, 6500, 7750, 8060, 8125, 10075, 12500, 13000, 15500, 15625, 16120, 16250, 19375, 20150, 25000, 31000, 31250, 32500, 38750, 40300, 40625, 50375, 62500, 65000, 77500, 78125, 80600, 81250, 96875, 100750, 125000, 155000, 156250, 162500, 193750, 201500, 203125, 251875, 312500, 325000, 387500, 403000, 406250, 484375, 503750, 625000, 775000, 812500, 968750, 1007500, 1015625, 1259375, 1625000, 1937500, 2015000, 2031250, 2421875, 2518750, 3875000, 4062500, 4843750, 5037500, 6296875, 8125000, 9687500, 10075000, 12593750, 19375000, 25187500, 31484375, 50375000, 62968750, 125937500, 251875000]

約数ペア:

[(1, 251875000), (2, 125937500), (4, 62968750), (5, 50375000), (8, 31484375), (10, 25187500), (13, 19375000), (20, 12593750), (25, 10075000), (26, 9687500), (31, 8125000), (40, 6296875), (50, 5037500), (52, 4843750), (62, 4062500), (65, 3875000), (100, 2518750), (104, 2421875), (124, 2031250), (125, 2015000), (130, 1937500), (155, 1625000), (200, 1259375), (248, 1015625), (250, 1007500), (260, 968750), (310, 812500), (325, 775000), (403, 625000), (500, 503750), (520, 484375), (620, 406250), (625, 403000), (650, 387500), (775, 325000), (806, 312500), (1000, 251875), (1240, 203125), (1250, 201500), (1300, 193750), (1550, 162500), (1612, 156250), (1625, 155000), (2015, 125000), (2500, 100750), (2600, 96875), (3100, 81250), (3125, 80600), (3224, 78125), (3250, 77500), (3875, 65000), (4030, 62500), (5000, 50375), (6200, 40625), (6250, 40300), (6500, 38750), (7750, 32500), (8060, 31250), (8125, 31000), (10075, 25000), (12500, 20150), (13000, 19375), (15500, 16250), (15625, 16120)]