289691318

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{2671}}^1$

素因数の和:2868

約数の個数: 32

約数和(自身を含む): 508919808

約数和(自身を除く): 219228490

約数列:

[1, 2, 7, 14, 61, 122, 127, 254, 427, 854, 889, 1778, 2671, 5342, 7747, 15494, 18697, 37394, 54229, 108458, 162931, 325862, 339217, 678434, 1140517, 2281034, 2374519, 4749038, 20692237, 41384474, 144845659, 289691318]

約数ペア:

[(1, 289691318), (2, 144845659), (7, 41384474), (14, 20692237), (61, 4749038), (122, 2374519), (127, 2281034), (254, 1140517), (427, 678434), (854, 339217), (889, 325862), (1778, 162931), (2671, 108458), (5342, 54229), (7747, 37394), (15494, 18697)]