840407056

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{664879}}^1$

素因数の和:664966

約数の個数: 20

約数和(自身を含む): 1648902400

約数和(自身を除く): 808495344

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 664879, 1329758, 2659516, 5319032, 10638064, 52525441, 105050882, 210101764, 420203528, 840407056]

約数ペア:

[(1, 840407056), (2, 420203528), (4, 210101764), (8, 105050882), (16, 52525441), (79, 10638064), (158, 5319032), (316, 2659516), (632, 1329758), (1264, 664879)]