21406830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{4789}}^1$

素因数の和:4948

約数の個数: 32

約数和(自身を含む): 51732000

約数和(自身を除く): 30325170

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 149, 298, 447, 745, 894, 1490, 2235, 4470, 4789, 9578, 14367, 23945, 28734, 47890, 71835, 143670, 713561, 1427122, 2140683, 3567805, 4281366, 7135610, 10703415, 21406830]

約数ペア:

[(1, 21406830), (2, 10703415), (3, 7135610), (5, 4281366), (6, 3567805), (10, 2140683), (15, 1427122), (30, 713561), (149, 143670), (298, 71835), (447, 47890), (745, 28734), (894, 23945), (1490, 14367), (2235, 9578), (4470, 4789)]