21942568

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{599}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 43560000

約数和(自身を除く): 21617432

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 241, 482, 599, 964, 1198, 1928, 2396, 4579, 4792, 9158, 11381, 18316, 22762, 36632, 45524, 91048, 144359, 288718, 577436, 1154872, 2742821, 5485642, 10971284, 21942568]

約数ペア:

[(1, 21942568), (2, 10971284), (4, 5485642), (8, 2742821), (19, 1154872), (38, 577436), (76, 288718), (152, 144359), (241, 91048), (482, 45524), (599, 36632), (964, 22762), (1198, 18316), (1928, 11381), (2396, 9158), (4579, 4792)]