8428780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{541}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 19121760

約数和(自身を除く): 10692980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 541, 779, 820, 1082, 1558, 2164, 2705, 3116, 3895, 5410, 7790, 10279, 10820, 15580, 20558, 22181, 41116, 44362, 51395, 88724, 102790, 110905, 205580, 221810, 421439, 443620, 842878, 1685756, 2107195, 4214390, 8428780]

約数ペア:

[(1, 8428780), (2, 4214390), (4, 2107195), (5, 1685756), (10, 842878), (19, 443620), (20, 421439), (38, 221810), (41, 205580), (76, 110905), (82, 102790), (95, 88724), (164, 51395), (190, 44362), (205, 41116), (380, 22181), (410, 20558), (541, 15580), (779, 10820), (820, 10279), (1082, 7790), (1558, 5410), (2164, 3895), (2705, 3116)]