31261215

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2851}}^1$

素因数の和:2919

約数の個数: 32

約数和(自身を含む): 54210816

約数和(自身を除く): 22949601

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 2193, 2851, 3655, 8553, 10965, 14255, 42765, 48467, 122593, 145401, 242335, 367779, 612965, 727005, 1838895, 2084081, 6252243, 10420405, 31261215]

約数ペア:

[(1, 31261215), (3, 10420405), (5, 6252243), (15, 2084081), (17, 1838895), (43, 727005), (51, 612965), (85, 367779), (129, 242335), (215, 145401), (255, 122593), (645, 48467), (731, 42765), (2193, 14255), (2851, 10965), (3655, 8553)]