21001550

素因数分解:

$2^1\times 5^2\times {\mathrm{149}}^1\times {\mathrm{2819}}^1$

素因数の和:2980

約数の個数: 24

約数和(自身を含む): 39339000

約数和(自身を除く): 18337450

約数列:

[1, 2, 5, 10, 25, 50, 149, 298, 745, 1490, 2819, 3725, 5638, 7450, 14095, 28190, 70475, 140950, 420031, 840062, 2100155, 4200310, 10500775, 21001550]

約数ペア:

[(1, 21001550), (2, 10500775), (5, 4200310), (10, 2100155), (25, 840062), (50, 420031), (149, 140950), (298, 70475), (745, 28190), (1490, 14095), (2819, 7450), (3725, 5638)]