21211313

素因数分解:

${\mathrm{23}}^2\times {\mathrm{101}}^1\times {\mathrm{397}}^1$

素因数の和:544

約数の個数: 12

約数和(自身を含む): 22449588

約数和(自身を除く): 1238275

約数列:

[1, 23, 101, 397, 529, 2323, 9131, 40097, 53429, 210013, 922231, 21211313]

約数ペア:

[(1, 21211313), (23, 922231), (101, 210013), (397, 53429), (529, 40097), (2323, 9131)]