261020000

素因数分解:

$2^5\times 5^4\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:482

約数の個数: 120

約数和(自身を含む): 664437312

約数和(自身を除く): 403417312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 100, 124, 125, 155, 160, 200, 248, 250, 310, 400, 421, 496, 500, 620, 625, 775, 800, 842, 992, 1000, 1240, 1250, 1550, 1684, 2000, 2105, 2480, 2500, 3100, 3368, 3875, 4000, 4210, 4960, 5000, 6200, 6736, 7750, 8420, 10000, 10525, 12400, 13051, 13472, 15500, 16840, 19375, 20000, 21050, 24800, 26102, 31000, 33680, 38750, 42100, 52204, 52625, 62000, 65255, 67360, 77500, 84200, 104408, 105250, 124000, 130510, 155000, 168400, 208816, 210500, 261020, 263125, 310000, 326275, 336800, 417632, 421000, 522040, 526250, 620000, 652550, 842000, 1044080, 1052500, 1305100, 1631375, 1684000, 2088160, 2105000, 2610200, 3262750, 4210000, 5220400, 6525500, 8156875, 8420000, 10440800, 13051000, 16313750, 26102000, 32627500, 52204000, 65255000, 130510000, 261020000]

約数ペア:

[(1, 261020000), (2, 130510000), (4, 65255000), (5, 52204000), (8, 32627500), (10, 26102000), (16, 16313750), (20, 13051000), (25, 10440800), (31, 8420000), (32, 8156875), (40, 6525500), (50, 5220400), (62, 4210000), (80, 3262750), (100, 2610200), (124, 2105000), (125, 2088160), (155, 1684000), (160, 1631375), (200, 1305100), (248, 1052500), (250, 1044080), (310, 842000), (400, 652550), (421, 620000), (496, 526250), (500, 522040), (620, 421000), (625, 417632), (775, 336800), (800, 326275), (842, 310000), (992, 263125), (1000, 261020), (1240, 210500), (1250, 208816), (1550, 168400), (1684, 155000), (2000, 130510), (2105, 124000), (2480, 105250), (2500, 104408), (3100, 84200), (3368, 77500), (3875, 67360), (4000, 65255), (4210, 62000), (4960, 52625), (5000, 52204), (6200, 42100), (6736, 38750), (7750, 33680), (8420, 31000), (10000, 26102), (10525, 24800), (12400, 21050), (13051, 20000), (13472, 19375), (15500, 16840)]