8421640

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1217}}^1$

素因数の和:1401

約数の個数: 32

約数和(自身を含む): 19073880

約数和(自身を除く): 10652240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1217, 1384, 1730, 2434, 3460, 4868, 6085, 6920, 9736, 12170, 24340, 48680, 210541, 421082, 842164, 1052705, 1684328, 2105410, 4210820, 8421640]

約数ペア:

[(1, 8421640), (2, 4210820), (4, 2105410), (5, 1684328), (8, 1052705), (10, 842164), (20, 421082), (40, 210541), (173, 48680), (346, 24340), (692, 12170), (865, 9736), (1217, 6920), (1384, 6085), (1730, 4868), (2434, 3460)]