128499394

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{4139}}^1$

素因数の和:4222

約数の個数: 24

約数和(自身を含む): 208208880

約数和(自身を除く): 79709486

約数列:

[1, 2, 19, 38, 43, 86, 361, 722, 817, 1634, 4139, 8278, 15523, 31046, 78641, 157282, 177977, 355954, 1494179, 2988358, 3381563, 6763126, 64249697, 128499394]

約数ペア:

[(1, 128499394), (2, 64249697), (19, 6763126), (38, 3381563), (43, 2988358), (86, 1494179), (361, 355954), (722, 177977), (817, 157282), (1634, 78641), (4139, 31046), (8278, 15523)]