220720496

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{445001}}^1$

素因数の和:445040

約数の個数: 20

約数和(自身を含む): 441441984

約数和(自身を除く): 220721488

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 445001, 890002, 1780004, 3560008, 7120016, 13795031, 27590062, 55180124, 110360248, 220720496]

約数ペア:

[(1, 220720496), (2, 110360248), (4, 55180124), (8, 27590062), (16, 13795031), (31, 7120016), (62, 3560008), (124, 1780004), (248, 890002), (496, 445001)]