128811668

素因数分解:

$2^2\times {\mathrm{41}}^2\times {\mathrm{19157}}^1$

素因数の和:19243

約数の個数: 18

約数和(自身を含む): 231064638

約数和(自身を除く): 102252970

約数列:

[1, 2, 4, 41, 82, 164, 1681, 3362, 6724, 19157, 38314, 76628, 785437, 1570874, 3141748, 32202917, 64405834, 128811668]

約数ペア:

[(1, 128811668), (2, 64405834), (4, 32202917), (41, 3141748), (82, 1570874), (164, 785437), (1681, 76628), (3362, 38314), (6724, 19157)]