21052287

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 31352256

約数和(自身を除く): 10299969

約数列:

[1, 3, 9, 47, 141, 157, 317, 423, 471, 951, 1413, 2853, 7379, 14899, 22137, 44697, 49769, 66411, 134091, 149307, 447921, 2339143, 7017429, 21052287]

約数ペア:

[(1, 21052287), (3, 7017429), (9, 2339143), (47, 447921), (141, 149307), (157, 134091), (317, 66411), (423, 49769), (471, 44697), (951, 22137), (1413, 14899), (2853, 7379)]