21678424

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1433}}^1$

素因数の和:1531

約数の個数: 32

約数和(自身を含む): 42675840

約数和(自身を除く): 20997416

約数列:

[1, 2, 4, 8, 31, 61, 62, 122, 124, 244, 248, 488, 1433, 1891, 2866, 3782, 5732, 7564, 11464, 15128, 44423, 87413, 88846, 174826, 177692, 349652, 355384, 699304, 2709803, 5419606, 10839212, 21678424]

約数ペア:

[(1, 21678424), (2, 10839212), (4, 5419606), (8, 2709803), (31, 699304), (61, 355384), (62, 349652), (122, 177692), (124, 174826), (244, 88846), (248, 87413), (488, 44423), (1433, 15128), (1891, 11464), (2866, 7564), (3782, 5732)]