18621980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1069}}^1$

素因数の和:1158

約数の個数: 48

約数和(自身を含む): 42782880

約数和(自身を除く): 24160900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 670, 871, 1069, 1340, 1742, 2138, 3484, 4276, 4355, 5345, 8710, 10690, 13897, 17420, 21380, 27794, 55588, 69485, 71623, 138970, 143246, 277940, 286492, 358115, 716230, 931099, 1432460, 1862198, 3724396, 4655495, 9310990, 18621980]

約数ペア:

[(1, 18621980), (2, 9310990), (4, 4655495), (5, 3724396), (10, 1862198), (13, 1432460), (20, 931099), (26, 716230), (52, 358115), (65, 286492), (67, 277940), (130, 143246), (134, 138970), (260, 71623), (268, 69485), (335, 55588), (670, 27794), (871, 21380), (1069, 17420), (1340, 13897), (1742, 10690), (2138, 8710), (3484, 5345), (4276, 4355)]