21307060

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{20101}}^1$

素因数の和:20163

約数の個数: 24

約数和(自身を含む): 45591336

約数和(自身を除く): 24284276

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 20101, 40202, 80404, 100505, 201010, 402020, 1065353, 2130706, 4261412, 5326765, 10653530, 21307060]

約数ペア:

[(1, 21307060), (2, 10653530), (4, 5326765), (5, 4261412), (10, 2130706), (20, 1065353), (53, 402020), (106, 201010), (212, 100505), (265, 80404), (530, 40202), (1060, 20101)]