21818290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1069}}^1$

素因数の和:1246

約数の個数: 32

約数和(自身を含む): 42603120

約数和(自身を除く): 20784830

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157, 314, 785, 1069, 1570, 2041, 2138, 4082, 5345, 10205, 10690, 13897, 20410, 27794, 69485, 138970, 167833, 335666, 839165, 1678330, 2181829, 4363658, 10909145, 21818290]

約数ペア:

[(1, 21818290), (2, 10909145), (5, 4363658), (10, 2181829), (13, 1678330), (26, 839165), (65, 335666), (130, 167833), (157, 138970), (314, 69485), (785, 27794), (1069, 20410), (1570, 13897), (2041, 10690), (2138, 10205), (4082, 5345)]