27998980

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{5323}}^1$

素因数の和:5595

約数の個数: 24

約数和(自身を含む): 59032512

約数和(自身を除く): 31033532

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 5260, 5323, 10646, 21292, 26615, 53230, 106460, 1399949, 2799898, 5599796, 6999745, 13999490, 27998980]

約数ペア:

[(1, 27998980), (2, 13999490), (4, 6999745), (5, 5599796), (10, 2799898), (20, 1399949), (263, 106460), (526, 53230), (1052, 26615), (1315, 21292), (2630, 10646), (5260, 5323)]