128421307

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{659}}^1$

素因数の和:811

約数の個数: 24

約数和(自身を含む): 154843920

約数和(自身を除く): 26422613

約数列:

[1, 7, 41, 49, 97, 287, 659, 679, 2009, 3977, 4613, 4753, 27019, 27839, 32291, 63923, 189133, 194873, 447461, 1323931, 2620843, 3132227, 18345901, 128421307]

約数ペア:

[(1, 128421307), (7, 18345901), (41, 3132227), (49, 2620843), (97, 1323931), (287, 447461), (659, 194873), (679, 189133), (2009, 63923), (3977, 32291), (4613, 27839), (4753, 27019)]