21619900

素因数分解:

$2^2\times 5^2\times {\mathrm{149}}^1\times {\mathrm{1451}}^1$

素因数の和:1614

約数の個数: 36

約数和(自身を含む): 47262600

約数和(自身を除く): 25642700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 149, 298, 596, 745, 1451, 1490, 2902, 2980, 3725, 5804, 7255, 7450, 14510, 14900, 29020, 36275, 72550, 145100, 216199, 432398, 864796, 1080995, 2161990, 4323980, 5404975, 10809950, 21619900]

約数ペア:

[(1, 21619900), (2, 10809950), (4, 5404975), (5, 4323980), (10, 2161990), (20, 1080995), (25, 864796), (50, 432398), (100, 216199), (149, 145100), (298, 72550), (596, 36275), (745, 29020), (1451, 14900), (1490, 14510), (2902, 7450), (2980, 7255), (3725, 5804)]