4437500

素因数分解:

$2^2\times 5^6\times {\mathrm{71}}^1$

素因数の和:105

約数の個数: 42

約数和(自身を含む): 9843624

約数和(自身を除く): 5406124

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 125, 142, 250, 284, 355, 500, 625, 710, 1250, 1420, 1775, 2500, 3125, 3550, 6250, 7100, 8875, 12500, 15625, 17750, 31250, 35500, 44375, 62500, 88750, 177500, 221875, 443750, 887500, 1109375, 2218750, 4437500]

約数ペア:

[(1, 4437500), (2, 2218750), (4, 1109375), (5, 887500), (10, 443750), (20, 221875), (25, 177500), (50, 88750), (71, 62500), (100, 44375), (125, 35500), (142, 31250), (250, 17750), (284, 15625), (355, 12500), (500, 8875), (625, 7100), (710, 6250), (1250, 3550), (1420, 3125), (1775, 2500)]