20919911

素因数分解:

${\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:554

約数の個数: 16

約数和(自身を含む): 23091840

約数和(自身を除く): 2171929

約数列:

[1, 17, 37, 79, 421, 629, 1343, 2923, 7157, 15577, 33259, 49691, 264809, 565403, 1230583, 20919911]

約数ペア:

[(1, 20919911), (17, 1230583), (37, 565403), (79, 264809), (421, 49691), (629, 33259), (1343, 15577), (2923, 7157)]