40016180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{22481}}^1$

素因数の和:22579

約数の個数: 24

約数和(自身を含む): 84981960

約数和(自身を除く): 44965780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 22481, 44962, 89924, 112405, 224810, 449620, 2000809, 4001618, 8003236, 10004045, 20008090, 40016180]

約数ペア:

[(1, 40016180), (2, 20008090), (4, 10004045), (5, 8003236), (10, 4001618), (20, 2000809), (89, 449620), (178, 224810), (356, 112405), (445, 89924), (890, 44962), (1780, 22481)]