21803679

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{601}}^1$

素因数の和:775

約数の個数: 24

約数和(自身を含む): 32869200

約数和(自身を除く): 11065521

約数列:

[1, 3, 9, 29, 87, 139, 261, 417, 601, 1251, 1803, 4031, 5409, 12093, 17429, 36279, 52287, 83539, 156861, 250617, 751851, 2422631, 7267893, 21803679]

約数ペア:

[(1, 21803679), (3, 7267893), (9, 2422631), (29, 751851), (87, 250617), (139, 156861), (261, 83539), (417, 52287), (601, 36279), (1251, 17429), (1803, 12093), (4031, 5409)]