129619480

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{3947}}^1$

素因数の和:4779

約数の個数: 32

約数和(自身を含む): 292073040

約数和(自身を除く): 162453560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1642, 3284, 3947, 4105, 6568, 7894, 8210, 15788, 16420, 19735, 31576, 32840, 39470, 78940, 157880, 3240487, 6480974, 12961948, 16202435, 25923896, 32404870, 64809740, 129619480]

約数ペア:

[(1, 129619480), (2, 64809740), (4, 32404870), (5, 25923896), (8, 16202435), (10, 12961948), (20, 6480974), (40, 3240487), (821, 157880), (1642, 78940), (3284, 39470), (3947, 32840), (4105, 31576), (6568, 19735), (7894, 16420), (8210, 15788)]