21311536

素因数分解:

$2^4\times {\mathrm{151}}^1\times {\mathrm{8821}}^1$

素因数の和:8980

約数の個数: 20

約数和(自身を含む): 41569264

約数和(自身を除く): 20257728

約数列:

[1, 2, 4, 8, 16, 151, 302, 604, 1208, 2416, 8821, 17642, 35284, 70568, 141136, 1331971, 2663942, 5327884, 10655768, 21311536]

約数ペア:

[(1, 21311536), (2, 10655768), (4, 5327884), (8, 2663942), (16, 1331971), (151, 141136), (302, 70568), (604, 35284), (1208, 17642), (2416, 8821)]