21013590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53881}}^1$

素因数の和:53904

約数の個数: 32

約数和(自身を含む): 54313056

約数和(自身を除く): 33299466

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53881, 107762, 161643, 269405, 323286, 538810, 700453, 808215, 1400906, 1616430, 2101359, 3502265, 4202718, 7004530, 10506795, 21013590]

約数ペア:

[(1, 21013590), (2, 10506795), (3, 7004530), (5, 4202718), (6, 3502265), (10, 2101359), (13, 1616430), (15, 1400906), (26, 808215), (30, 700453), (39, 538810), (65, 323286), (78, 269405), (130, 161643), (195, 107762), (390, 53881)]