21154490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1091}}^1$

素因数の和:1382

約数の個数: 32

約数和(自身を含む): 43714944

約数和(自身を除く): 22560454

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 277, 554, 1091, 1385, 1939, 2182, 2770, 3878, 5455, 7637, 9695, 10910, 15274, 19390, 38185, 76370, 302207, 604414, 1511035, 2115449, 3022070, 4230898, 10577245, 21154490]

約数ペア:

[(1, 21154490), (2, 10577245), (5, 4230898), (7, 3022070), (10, 2115449), (14, 1511035), (35, 604414), (70, 302207), (277, 76370), (554, 38185), (1091, 19390), (1385, 15274), (1939, 10910), (2182, 9695), (2770, 7637), (3878, 5455)]