72640280

素因数分解:

$2^3\times 5^1\times {\mathrm{1816007}}^1$

素因数の和:1816018

約数の個数: 16

約数和(自身を含む): 163440720

約数和(自身を除く): 90800440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1816007, 3632014, 7264028, 9080035, 14528056, 18160070, 36320140, 72640280]

約数ペア:

[(1, 72640280), (2, 36320140), (4, 18160070), (5, 14528056), (8, 9080035), (10, 7264028), (20, 3632014), (40, 1816007)]