21987412

素因数分解:

$2^2\times {\mathrm{59}}^1\times {\mathrm{151}}^1\times {\mathrm{617}}^1$

素因数の和:831

約数の個数: 24

約数和(自身を含む): 39453120

約数和(自身を除く): 17465708

約数列:

[1, 2, 4, 59, 118, 151, 236, 302, 604, 617, 1234, 2468, 8909, 17818, 35636, 36403, 72806, 93167, 145612, 186334, 372668, 5496853, 10993706, 21987412]

約数ペア:

[(1, 21987412), (2, 10993706), (4, 5496853), (59, 372668), (118, 186334), (151, 145612), (236, 93167), (302, 72806), (604, 36403), (617, 35636), (1234, 17818), (2468, 8909)]