81245540

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{60631}}^1$

素因数の和:60707

約数の個数: 24

約数和(自身を含む): 173164992

約数和(自身を除く): 91919452

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 60631, 121262, 242524, 303155, 606310, 1212620, 4062277, 8124554, 16249108, 20311385, 40622770, 81245540]

約数ペア:

[(1, 81245540), (2, 40622770), (4, 20311385), (5, 16249108), (10, 8124554), (20, 4062277), (67, 1212620), (134, 606310), (268, 303155), (335, 242524), (670, 121262), (1340, 60631)]