20562860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{307}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 46103904

約数和(自身を除く): 25541044

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 197, 307, 340, 394, 614, 788, 985, 1228, 1535, 1970, 3070, 3349, 3940, 5219, 6140, 6698, 10438, 13396, 16745, 20876, 26095, 33490, 52190, 60479, 66980, 104380, 120958, 241916, 302395, 604790, 1028143, 1209580, 2056286, 4112572, 5140715, 10281430, 20562860]

約数ペア:

[(1, 20562860), (2, 10281430), (4, 5140715), (5, 4112572), (10, 2056286), (17, 1209580), (20, 1028143), (34, 604790), (68, 302395), (85, 241916), (170, 120958), (197, 104380), (307, 66980), (340, 60479), (394, 52190), (614, 33490), (788, 26095), (985, 20876), (1228, 16745), (1535, 13396), (1970, 10438), (3070, 6698), (3349, 6140), (3940, 5219)]