81898780

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{77263}}^1$

素因数の和:77325

約数の個数: 24

約数和(自身を含む): 175234752

約数和(自身を除く): 93335972

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 77263, 154526, 309052, 386315, 772630, 1545260, 4094939, 8189878, 16379756, 20474695, 40949390, 81898780]

約数ペア:

[(1, 81898780), (2, 40949390), (4, 20474695), (5, 16379756), (10, 8189878), (20, 4094939), (53, 1545260), (106, 772630), (212, 386315), (265, 309052), (530, 154526), (1060, 77263)]