21537980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63347}}^1$

素因数の和:63373

約数の個数: 24

約数和(自身を含む): 47891088

約数和(自身を除く): 26353108

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63347, 126694, 253388, 316735, 633470, 1076899, 1266940, 2153798, 4307596, 5384495, 10768990, 21537980]

約数ペア:

[(1, 21537980), (2, 10768990), (4, 5384495), (5, 4307596), (10, 2153798), (17, 1266940), (20, 1076899), (34, 633470), (68, 316735), (85, 253388), (170, 126694), (340, 63347)]