18979948

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{383}}^1\times {\mathrm{953}}^1$

素因数の和:1353

約数の個数: 24

約数和(自身を含む): 35900928

約数和(自身を除く): 16920980

約数列:

[1, 2, 4, 13, 26, 52, 383, 766, 953, 1532, 1906, 3812, 4979, 9958, 12389, 19916, 24778, 49556, 364999, 729998, 1459996, 4744987, 9489974, 18979948]

約数ペア:

[(1, 18979948), (2, 9489974), (4, 4744987), (13, 1459996), (26, 729998), (52, 364999), (383, 49556), (766, 24778), (953, 19916), (1532, 12389), (1906, 9958), (3812, 4979)]