64423220

素因数分解:

$2^2\times 5^1\times {\mathrm{1613}}^1\times {\mathrm{1997}}^1$

素因数の和:3619

約数の個数: 24

約数和(自身を含む): 135440424

約数和(自身を除く): 71017204

約数列:

[1, 2, 4, 5, 10, 20, 1613, 1997, 3226, 3994, 6452, 7988, 8065, 9985, 16130, 19970, 32260, 39940, 3221161, 6442322, 12884644, 16105805, 32211610, 64423220]

約数ペア:

[(1, 64423220), (2, 32211610), (4, 16105805), (5, 12884644), (10, 6442322), (20, 3221161), (1613, 39940), (1997, 32260), (3226, 19970), (3994, 16130), (6452, 9985), (7988, 8065)]