678691485

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{212423}}^1$

素因数の和:212505

約数の個数: 24

約数和(自身を含む): 1192973184

約数和(自身を除く): 514281699

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 212423, 637269, 1062115, 1911807, 3186345, 9559035, 15082033, 45246099, 75410165, 135738297, 226230495, 678691485]

約数ペア:

[(1, 678691485), (3, 226230495), (5, 135738297), (9, 75410165), (15, 45246099), (45, 15082033), (71, 9559035), (213, 3186345), (355, 1911807), (639, 1062115), (1065, 637269), (3195, 212423)]