20665406

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{2237}}^1$

素因数の和:2419

約数の個数: 16

約数和(自身を含む): 32227200

約数和(自身を除く): 11561794

約数列:

[1, 2, 31, 62, 149, 298, 2237, 4474, 4619, 9238, 69347, 138694, 333313, 666626, 10332703, 20665406]

約数ペア:

[(1, 20665406), (2, 10332703), (31, 666626), (62, 333313), (149, 138694), (298, 69347), (2237, 9238), (4474, 4619)]