398159993

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{823}}^1$

素因数の和:1005

約数の個数: 32

約数和(自身を含む): 510062592

約数和(自身を除く): 111902599

約数列:

[1, 7, 11, 61, 77, 103, 427, 671, 721, 823, 1133, 4697, 5761, 6283, 7931, 9053, 43981, 50203, 63371, 69113, 84769, 351421, 483791, 552233, 593383, 932459, 3865631, 5170909, 6527213, 36196363, 56879999, 398159993]

約数ペア:

[(1, 398159993), (7, 56879999), (11, 36196363), (61, 6527213), (77, 5170909), (103, 3865631), (427, 932459), (671, 593383), (721, 552233), (823, 483791), (1133, 351421), (4697, 84769), (5761, 69113), (6283, 63371), (7931, 50203), (9053, 43981)]