21831290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2753}}^1$

素因数の和:2834

約数の個数: 32

約数和(自身を含む): 43028496

約数和(自身を除く): 21197206

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 305, 610, 793, 1586, 2753, 3965, 5506, 7930, 13765, 27530, 35789, 71578, 167933, 178945, 335866, 357890, 839665, 1679330, 2183129, 4366258, 10915645, 21831290]

約数ペア:

[(1, 21831290), (2, 10915645), (5, 4366258), (10, 2183129), (13, 1679330), (26, 839665), (61, 357890), (65, 335866), (122, 178945), (130, 167933), (305, 71578), (610, 35789), (793, 27530), (1586, 13765), (2753, 7930), (3965, 5506)]