21116518

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1\times {\mathrm{809}}^1$

素因数の和:1263

約数の個数: 16

約数和(自身を含む): 32814720

約数和(自身を除く): 11698202

約数列:

[1, 2, 31, 62, 421, 809, 842, 1618, 13051, 25079, 26102, 50158, 340589, 681178, 10558259, 21116518]

約数ペア:

[(1, 21116518), (2, 10558259), (31, 681178), (62, 340589), (421, 50158), (809, 26102), (842, 25079), (1618, 13051)]