20057500

素因数分解:

$2^2\times 5^4\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:208

約数の個数: 60

約数和(自身を含む): 44873136

約数和(自身を除く): 24815636

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 113, 125, 142, 226, 250, 284, 355, 452, 500, 565, 625, 710, 1130, 1250, 1420, 1775, 2260, 2500, 2825, 3550, 5650, 7100, 8023, 8875, 11300, 14125, 16046, 17750, 28250, 32092, 35500, 40115, 44375, 56500, 70625, 80230, 88750, 141250, 160460, 177500, 200575, 282500, 401150, 802300, 1002875, 2005750, 4011500, 5014375, 10028750, 20057500]

約数ペア:

[(1, 20057500), (2, 10028750), (4, 5014375), (5, 4011500), (10, 2005750), (20, 1002875), (25, 802300), (50, 401150), (71, 282500), (100, 200575), (113, 177500), (125, 160460), (142, 141250), (226, 88750), (250, 80230), (284, 70625), (355, 56500), (452, 44375), (500, 40115), (565, 35500), (625, 32092), (710, 28250), (1130, 17750), (1250, 16046), (1420, 14125), (1775, 11300), (2260, 8875), (2500, 8023), (2825, 7100), (3550, 5650)]