420311480

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{147997}}^1$

素因数の和:148079

約数の個数: 32

約数和(自身を含む): 959027040

約数和(自身を除く): 538715560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 147997, 295994, 591988, 739985, 1183976, 1479970, 2959940, 5919880, 10507787, 21015574, 42031148, 52538935, 84062296, 105077870, 210155740, 420311480]

約数ペア:

[(1, 420311480), (2, 210155740), (4, 105077870), (5, 84062296), (8, 52538935), (10, 42031148), (20, 21015574), (40, 10507787), (71, 5919880), (142, 2959940), (284, 1479970), (355, 1183976), (568, 739985), (710, 591988), (1420, 295994), (2840, 147997)]