8045127500

素因数分解:

$2^2\times 5^4\times {\mathrm{499}}^1\times {\mathrm{6449}}^1$

素因数の和:6972

約数の個数: 60

約数和(自身を含む): 17631075000

約数和(自身を除く): 9585947500

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 499, 500, 625, 998, 1250, 1996, 2495, 2500, 4990, 6449, 9980, 12475, 12898, 24950, 25796, 32245, 49900, 62375, 64490, 124750, 128980, 161225, 249500, 311875, 322450, 623750, 644900, 806125, 1247500, 1612250, 3218051, 3224500, 4030625, 6436102, 8061250, 12872204, 16090255, 16122500, 32180510, 64361020, 80451275, 160902550, 321805100, 402256375, 804512750, 1609025500, 2011281875, 4022563750, 8045127500]

約数ペア:

[(1, 8045127500), (2, 4022563750), (4, 2011281875), (5, 1609025500), (10, 804512750), (20, 402256375), (25, 321805100), (50, 160902550), (100, 80451275), (125, 64361020), (250, 32180510), (499, 16122500), (500, 16090255), (625, 12872204), (998, 8061250), (1250, 6436102), (1996, 4030625), (2495, 3224500), (2500, 3218051), (4990, 1612250), (6449, 1247500), (9980, 806125), (12475, 644900), (12898, 623750), (24950, 322450), (25796, 311875), (32245, 249500), (49900, 161225), (62375, 128980), (64490, 124750)]