20462390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:281

約数の個数: 64

約数和(自身を含む): 43110144

約数和(自身を除く): 22647754

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 47, 65, 85, 94, 130, 170, 197, 221, 235, 394, 442, 470, 611, 799, 985, 1105, 1222, 1598, 1970, 2210, 2561, 3055, 3349, 3995, 5122, 6110, 6698, 7990, 9259, 10387, 12805, 16745, 18518, 20774, 25610, 33490, 43537, 46295, 51935, 87074, 92590, 103870, 120367, 157403, 217685, 240734, 314806, 435370, 601835, 787015, 1203670, 1574030, 2046239, 4092478, 10231195, 20462390]

約数ペア:

[(1, 20462390), (2, 10231195), (5, 4092478), (10, 2046239), (13, 1574030), (17, 1203670), (26, 787015), (34, 601835), (47, 435370), (65, 314806), (85, 240734), (94, 217685), (130, 157403), (170, 120367), (197, 103870), (221, 92590), (235, 87074), (394, 51935), (442, 46295), (470, 43537), (611, 33490), (799, 25610), (985, 20774), (1105, 18518), (1222, 16745), (1598, 12805), (1970, 10387), (2210, 9259), (2561, 7990), (3055, 6698), (3349, 6110), (3995, 5122)]