21059968

素因数分解:

$2^7\times {\mathrm{164531}}^1$

素因数の和:164545

約数の個数: 16

約数和(自身を含む): 41955660

約数和(自身を除く): 20895692

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 164531, 329062, 658124, 1316248, 2632496, 5264992, 10529984, 21059968]

約数ペア:

[(1, 21059968), (2, 10529984), (4, 5264992), (8, 2632496), (16, 1316248), (32, 658124), (64, 329062), (128, 164531)]