21888075

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{617}}^1$

素因数の和:684

約数の個数: 48

約数和(自身を含む): 40461696

約数和(自身を除く): 18573621

約数列:

[1, 3, 5, 11, 15, 25, 33, 43, 55, 75, 129, 165, 215, 275, 473, 617, 645, 825, 1075, 1419, 1851, 2365, 3085, 3225, 6787, 7095, 9255, 11825, 15425, 20361, 26531, 33935, 35475, 46275, 79593, 101805, 132655, 169675, 291841, 397965, 509025, 663275, 875523, 1459205, 1989825, 4377615, 7296025, 21888075]

約数ペア:

[(1, 21888075), (3, 7296025), (5, 4377615), (11, 1989825), (15, 1459205), (25, 875523), (33, 663275), (43, 509025), (55, 397965), (75, 291841), (129, 169675), (165, 132655), (215, 101805), (275, 79593), (473, 46275), (617, 35475), (645, 33935), (825, 26531), (1075, 20361), (1419, 15425), (1851, 11825), (2365, 9255), (3085, 7095), (3225, 6787)]