20651510

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{953}}^1$

素因数の和:1168

約数の個数: 32

約数和(自身を含む): 40800672

約数和(自身を除く): 20149162

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197, 394, 953, 985, 1906, 1970, 2167, 4334, 4765, 9530, 10483, 10835, 20966, 21670, 52415, 104830, 187741, 375482, 938705, 1877410, 2065151, 4130302, 10325755, 20651510]

約数ペア:

[(1, 20651510), (2, 10325755), (5, 4130302), (10, 2065151), (11, 1877410), (22, 938705), (55, 375482), (110, 187741), (197, 104830), (394, 52415), (953, 21670), (985, 20966), (1906, 10835), (1970, 10483), (2167, 9530), (4334, 4765)]