20403291220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1074989}}^1$

素因数の和:1075084

約数の個数: 48

約数和(自身を含む): 46774964880

約数和(自身を除く): 26371673660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 730, 949, 1460, 1898, 3796, 4745, 9490, 18980, 1074989, 2149978, 4299956, 5374945, 10749890, 13974857, 21499780, 27949714, 55899428, 69874285, 78474197, 139748570, 156948394, 279497140, 313896788, 392370985, 784741970, 1020164561, 1569483940, 2040329122, 4080658244, 5100822805, 10201645610, 20403291220]

約数ペア:

[(1, 20403291220), (2, 10201645610), (4, 5100822805), (5, 4080658244), (10, 2040329122), (13, 1569483940), (20, 1020164561), (26, 784741970), (52, 392370985), (65, 313896788), (73, 279497140), (130, 156948394), (146, 139748570), (260, 78474197), (292, 69874285), (365, 55899428), (730, 27949714), (949, 21499780), (1460, 13974857), (1898, 10749890), (3796, 5374945), (4745, 4299956), (9490, 2149978), (18980, 1074989)]