20677780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{997}}^1$

素因数の和:1084

約数の個数: 48

約数和(自身を含む): 46778256

約数和(自身を除く): 26100476

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 61, 68, 85, 122, 170, 244, 305, 340, 610, 997, 1037, 1220, 1994, 2074, 3988, 4148, 4985, 5185, 9970, 10370, 16949, 19940, 20740, 33898, 60817, 67796, 84745, 121634, 169490, 243268, 304085, 338980, 608170, 1033889, 1216340, 2067778, 4135556, 5169445, 10338890, 20677780]

約数ペア:

[(1, 20677780), (2, 10338890), (4, 5169445), (5, 4135556), (10, 2067778), (17, 1216340), (20, 1033889), (34, 608170), (61, 338980), (68, 304085), (85, 243268), (122, 169490), (170, 121634), (244, 84745), (305, 67796), (340, 60817), (610, 33898), (997, 20740), (1037, 19940), (1220, 16949), (1994, 10370), (2074, 9970), (3988, 5185), (4148, 4985)]