64867640

素因数分解:

$2^3\times 5^1\times {\mathrm{761}}^1\times {\mathrm{2131}}^1$

素因数の和:2903

約数の個数: 32

約数和(自身を含む): 146212560

約数和(自身を除く): 81344920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 761, 1522, 2131, 3044, 3805, 4262, 6088, 7610, 8524, 10655, 15220, 17048, 21310, 30440, 42620, 85240, 1621691, 3243382, 6486764, 8108455, 12973528, 16216910, 32433820, 64867640]

約数ペア:

[(1, 64867640), (2, 32433820), (4, 16216910), (5, 12973528), (8, 8108455), (10, 6486764), (20, 3243382), (40, 1621691), (761, 85240), (1522, 42620), (2131, 30440), (3044, 21310), (3805, 17048), (4262, 15220), (6088, 10655), (7610, 8524)]