643864

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 1340640

約数和(自身を除く): 696776

約数列:

[1, 2, 4, 8, 13, 26, 41, 52, 82, 104, 151, 164, 302, 328, 533, 604, 1066, 1208, 1963, 2132, 3926, 4264, 6191, 7852, 12382, 15704, 24764, 49528, 80483, 160966, 321932, 643864]

約数ペア:

[(1, 643864), (2, 321932), (4, 160966), (8, 80483), (13, 49528), (26, 24764), (41, 15704), (52, 12382), (82, 7852), (104, 6191), (151, 4264), (164, 3926), (302, 2132), (328, 1963), (533, 1208), (604, 1066)]