21722142

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{278489}}^1$

素因数の和:278507

約数の個数: 16

約数和(自身を含む): 46786320

約数和(自身を除く): 25064178

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 278489, 556978, 835467, 1670934, 3620357, 7240714, 10861071, 21722142]

約数ペア:

[(1, 21722142), (2, 10861071), (3, 7240714), (6, 3620357), (13, 1670934), (26, 835467), (39, 556978), (78, 278489)]