20997597

素因数分解:

$3^1\times {\mathrm{23}}^2\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:281

約数の個数: 24

約数和(自身を含む): 29782368

約数和(自身を除く): 8784771

約数列:

[1, 3, 23, 69, 101, 131, 303, 393, 529, 1587, 2323, 3013, 6969, 9039, 13231, 39693, 53429, 69299, 160287, 207897, 304313, 912939, 6999199, 20997597]

約数ペア:

[(1, 20997597), (3, 6999199), (23, 912939), (69, 304313), (101, 207897), (131, 160287), (303, 69299), (393, 53429), (529, 39693), (1587, 13231), (2323, 9039), (3013, 6969)]