258691726

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{331}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 415451520

約数和(自身を除く): 156759794

約数列:

[1, 2, 19, 38, 131, 157, 262, 314, 331, 662, 2489, 2983, 4978, 5966, 6289, 12578, 20567, 41134, 43361, 51967, 86722, 103934, 390773, 781546, 823859, 987373, 1647718, 1974746, 6807677, 13615354, 129345863, 258691726]

約数ペア:

[(1, 258691726), (2, 129345863), (19, 13615354), (38, 6807677), (131, 1974746), (157, 1647718), (262, 987373), (314, 823859), (331, 781546), (662, 390773), (2489, 103934), (2983, 86722), (4978, 51967), (5966, 43361), (6289, 41134), (12578, 20567)]