30891620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{25321}}^1$

素因数の和:25391

約数の個数: 24

約数和(自身を含む): 65938488

約数和(自身を除く): 35046868

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 25321, 50642, 101284, 126605, 253210, 506420, 1544581, 3089162, 6178324, 7722905, 15445810, 30891620]

約数ペア:

[(1, 30891620), (2, 15445810), (4, 7722905), (5, 6178324), (10, 3089162), (20, 1544581), (61, 506420), (122, 253210), (244, 126605), (305, 101284), (610, 50642), (1220, 25321)]