827920

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:223

約数の個数: 40

約数和(自身を含む): 1964160

約数和(自身を除く): 1136240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 131, 158, 262, 316, 395, 524, 632, 655, 790, 1048, 1264, 1310, 1580, 2096, 2620, 3160, 5240, 6320, 10349, 10480, 20698, 41396, 51745, 82792, 103490, 165584, 206980, 413960, 827920]

約数ペア:

[(1, 827920), (2, 413960), (4, 206980), (5, 165584), (8, 103490), (10, 82792), (16, 51745), (20, 41396), (40, 20698), (79, 10480), (80, 10349), (131, 6320), (158, 5240), (262, 3160), (316, 2620), (395, 2096), (524, 1580), (632, 1310), (655, 1264), (790, 1048)]