21162280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31121}}^1$

素因数の和:31149

約数の個数: 32

約数和(自身を含む): 50417640

約数和(自身を除く): 29255360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31121, 62242, 124484, 155605, 248968, 311210, 529057, 622420, 1058114, 1244840, 2116228, 2645285, 4232456, 5290570, 10581140, 21162280]

約数ペア:

[(1, 21162280), (2, 10581140), (4, 5290570), (5, 4232456), (8, 2645285), (10, 2116228), (17, 1244840), (20, 1058114), (34, 622420), (40, 529057), (68, 311210), (85, 248968), (136, 155605), (170, 124484), (340, 62242), (680, 31121)]