20438440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{46451}}^1$

素因数の和:46473

約数の個数: 32

約数和(自身を含む): 50168160

約数和(自身を除く): 29729720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 46451, 92902, 185804, 232255, 371608, 464510, 510961, 929020, 1021922, 1858040, 2043844, 2554805, 4087688, 5109610, 10219220, 20438440]

約数ペア:

[(1, 20438440), (2, 10219220), (4, 5109610), (5, 4087688), (8, 2554805), (10, 2043844), (11, 1858040), (20, 1021922), (22, 929020), (40, 510961), (44, 464510), (55, 371608), (88, 232255), (110, 185804), (220, 92902), (440, 46451)]