39991295

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 52615680

約数和(自身を除く): 12624385

約数列:

[1, 5, 19, 61, 67, 95, 103, 305, 335, 515, 1159, 1273, 1957, 4087, 5795, 6283, 6365, 6901, 9785, 20435, 31415, 34505, 77653, 119377, 131119, 388265, 420961, 596885, 655595, 2104805, 7998259, 39991295]

約数ペア:

[(1, 39991295), (5, 7998259), (19, 2104805), (61, 655595), (67, 596885), (95, 420961), (103, 388265), (305, 131119), (335, 119377), (515, 77653), (1159, 34505), (1273, 31415), (1957, 20435), (4087, 9785), (5795, 6901), (6283, 6365)]