128538515

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{521}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 192805920

約数和(自身を除く): 64267405

約数列:

[1, 5, 7, 19, 35, 49, 53, 95, 133, 245, 265, 371, 521, 665, 931, 1007, 1855, 2597, 2605, 3647, 4655, 5035, 7049, 9899, 12985, 18235, 25529, 27613, 35245, 49343, 49495, 69293, 127645, 138065, 193291, 246715, 346465, 485051, 524647, 966455, 1353037, 2425255, 2623235, 3672529, 6765185, 18362645, 25707703, 128538515]

約数ペア:

[(1, 128538515), (5, 25707703), (7, 18362645), (19, 6765185), (35, 3672529), (49, 2623235), (53, 2425255), (95, 1353037), (133, 966455), (245, 524647), (265, 485051), (371, 346465), (521, 246715), (665, 193291), (931, 138065), (1007, 127645), (1855, 69293), (2597, 49495), (2605, 49343), (3647, 35245), (4655, 27613), (5035, 25529), (7049, 18235), (9899, 12985)]