21318856

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{571}}^1$

素因数の和:949

約数の個数: 32

約数和(自身を含む): 43243200

約数和(自身を除く): 21924344

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 359, 571, 718, 1142, 1436, 2284, 2872, 4568, 4667, 7423, 9334, 14846, 18668, 29692, 37336, 59384, 204989, 409978, 819956, 1639912, 2664857, 5329714, 10659428, 21318856]

約数ペア:

[(1, 21318856), (2, 10659428), (4, 5329714), (8, 2664857), (13, 1639912), (26, 819956), (52, 409978), (104, 204989), (359, 59384), (571, 37336), (718, 29692), (1142, 18668), (1436, 14846), (2284, 9334), (2872, 7423), (4568, 4667)]