21873501

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:302

約数の個数: 36

約数和(自身を含む): 34857108

約数和(自身を除く): 12983607

約数列:

[1, 3, 9, 13, 39, 73, 117, 169, 197, 219, 507, 591, 657, 949, 1521, 1773, 2561, 2847, 7683, 8541, 12337, 14381, 23049, 33293, 37011, 43143, 99879, 111033, 129429, 186953, 299637, 560859, 1682577, 2430389, 7291167, 21873501]

約数ペア:

[(1, 21873501), (3, 7291167), (9, 2430389), (13, 1682577), (39, 560859), (73, 299637), (117, 186953), (169, 129429), (197, 111033), (219, 99879), (507, 43143), (591, 37011), (657, 33293), (949, 23049), (1521, 14381), (1773, 12337), (2561, 8541), (2847, 7683)]