21893205

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 36211968

約数和(自身を除く): 14318763

約数列:

[1, 3, 5, 15, 61, 71, 183, 213, 305, 337, 355, 915, 1011, 1065, 1685, 4331, 5055, 12993, 20557, 21655, 23927, 61671, 64965, 71781, 102785, 119635, 308355, 358905, 1459547, 4378641, 7297735, 21893205]

約数ペア:

[(1, 21893205), (3, 7297735), (5, 4378641), (15, 1459547), (61, 358905), (71, 308355), (183, 119635), (213, 102785), (305, 71781), (337, 64965), (355, 61671), (915, 23927), (1011, 21655), (1065, 20557), (1685, 12993), (4331, 5055)]