20851690

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{709}}^1$

素因数の和:906

約数の個数: 32

約数和(自身を含む): 40026960

約数和(自身を除く): 19175270

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 173, 346, 709, 865, 1418, 1730, 2941, 3545, 5882, 7090, 12053, 14705, 24106, 29410, 60265, 120530, 122657, 245314, 613285, 1226570, 2085169, 4170338, 10425845, 20851690]

約数ペア:

[(1, 20851690), (2, 10425845), (5, 4170338), (10, 2085169), (17, 1226570), (34, 613285), (85, 245314), (170, 122657), (173, 120530), (346, 60265), (709, 29410), (865, 24106), (1418, 14705), (1730, 12053), (2941, 7090), (3545, 5882)]