22187500

素因数分解:

$2^2\times 5^7\times {\mathrm{71}}^1$

素因数の和:110

約数の個数: 48

約数和(自身を含む): 49218624

約数和(自身を除く): 27031124

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, 78125, 88750, 156250, 177500, 221875, 312500, 443750, 887500, 1109375, 2218750, 4437500, 5546875, 11093750, 22187500]

約数ペア:

[(1, 22187500), (2, 11093750), (4, 5546875), (5, 4437500), (10, 2218750), (20, 1109375), (25, 887500), (50, 443750), (71, 312500), (100, 221875), (125, 177500), (142, 156250), (250, 88750), (284, 78125), (355, 62500), (500, 44375), (625, 35500), (710, 31250), (1250, 17750), (1420, 15625), (1775, 12500), (2500, 8875), (3125, 7100), (3550, 6250)]