19804902

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{253909}}^1$

素因数の和:253927

約数の個数: 16

約数和(自身を含む): 42656880

約数和(自身を除く): 22851978

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 253909, 507818, 761727, 1523454, 3300817, 6601634, 9902451, 19804902]

約数ペア:

[(1, 19804902), (2, 9902451), (3, 6601634), (6, 3300817), (13, 1523454), (26, 761727), (39, 507818), (78, 253909)]