21968570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{487}}^1$

素因数の和:854

約数の個数: 32

約数和(自身を含む): 42795648

約数和(自身を除く): 20827078

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 347, 487, 694, 974, 1735, 2435, 3470, 4511, 4870, 6331, 9022, 12662, 22555, 31655, 45110, 63310, 168989, 337978, 844945, 1689890, 2196857, 4393714, 10984285, 21968570]

約数ペア:

[(1, 21968570), (2, 10984285), (5, 4393714), (10, 2196857), (13, 1689890), (26, 844945), (65, 337978), (130, 168989), (347, 63310), (487, 45110), (694, 31655), (974, 22555), (1735, 12662), (2435, 9022), (3470, 6331), (4511, 4870)]