21581430

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55337}}^1$

素因数の和:55360

約数の個数: 32

約数和(自身を含む): 55780704

約数和(自身を除く): 34199274

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55337, 110674, 166011, 276685, 332022, 553370, 719381, 830055, 1438762, 1660110, 2158143, 3596905, 4316286, 7193810, 10790715, 21581430]

約数ペア:

[(1, 21581430), (2, 10790715), (3, 7193810), (5, 4316286), (6, 3596905), (10, 2158143), (13, 1660110), (15, 1438762), (26, 830055), (30, 719381), (39, 553370), (65, 332022), (78, 276685), (130, 166011), (195, 110674), (390, 55337)]