20156250

素因数分解:

$2^1\times 3^1\times 5^7\times {\mathrm{43}}^1$

素因数の和:83

約数の個数: 64

約数和(自身を含む): 51562368

約数和(自身を除く): 31406118

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 43, 50, 75, 86, 125, 129, 150, 215, 250, 258, 375, 430, 625, 645, 750, 1075, 1250, 1290, 1875, 2150, 3125, 3225, 3750, 5375, 6250, 6450, 9375, 10750, 15625, 16125, 18750, 26875, 31250, 32250, 46875, 53750, 78125, 80625, 93750, 134375, 156250, 161250, 234375, 268750, 403125, 468750, 671875, 806250, 1343750, 2015625, 3359375, 4031250, 6718750, 10078125, 20156250]

約数ペア:

[(1, 20156250), (2, 10078125), (3, 6718750), (5, 4031250), (6, 3359375), (10, 2015625), (15, 1343750), (25, 806250), (30, 671875), (43, 468750), (50, 403125), (75, 268750), (86, 234375), (125, 161250), (129, 156250), (150, 134375), (215, 93750), (250, 80625), (258, 78125), (375, 53750), (430, 46875), (625, 32250), (645, 31250), (750, 26875), (1075, 18750), (1250, 16125), (1290, 15625), (1875, 10750), (2150, 9375), (3125, 6450), (3225, 6250), (3750, 5375)]