21996819

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2161}}^1$

素因数の和:2212

約数の個数: 32

約数和(自身を含む): 36321600

約数和(自身を除く): 14324781

約数列:

[1, 3, 9, 13, 27, 29, 39, 87, 117, 261, 351, 377, 783, 1131, 2161, 3393, 6483, 10179, 19449, 28093, 58347, 62669, 84279, 188007, 252837, 564021, 758511, 814697, 1692063, 2444091, 7332273, 21996819]

約数ペア:

[(1, 21996819), (3, 7332273), (9, 2444091), (13, 1692063), (27, 814697), (29, 758511), (39, 564021), (87, 252837), (117, 188007), (261, 84279), (351, 62669), (377, 58347), (783, 28093), (1131, 19449), (2161, 10179), (3393, 6483)]