21647403

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1783}}^1$

素因数の和:1879

約数の個数: 24

約数和(自身を含む): 33396480

約数和(自身を除く): 11749077

約数列:

[1, 3, 9, 19, 57, 71, 171, 213, 639, 1349, 1783, 4047, 5349, 12141, 16047, 33877, 101631, 126593, 304893, 379779, 1139337, 2405267, 7215801, 21647403]

約数ペア:

[(1, 21647403), (3, 7215801), (9, 2405267), (19, 1139337), (57, 379779), (71, 304893), (171, 126593), (213, 101631), (639, 33877), (1349, 16047), (1783, 12141), (4047, 5349)]