64618780

素因数分解:

$2^2\times 5^1\times {\mathrm{977}}^1\times {\mathrm{3307}}^1$

素因数の和:4293

約数の個数: 24

約数和(自身を含む): 135879408

約数和(自身を除く): 71260628

約数列:

[1, 2, 4, 5, 10, 20, 977, 1954, 3307, 3908, 4885, 6614, 9770, 13228, 16535, 19540, 33070, 66140, 3230939, 6461878, 12923756, 16154695, 32309390, 64618780]

約数ペア:

[(1, 64618780), (2, 32309390), (4, 16154695), (5, 12923756), (10, 6461878), (20, 3230939), (977, 66140), (1954, 33070), (3307, 19540), (3908, 16535), (4885, 13228), (6614, 9770)]