21354873

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{151}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10163847

約数列:

[1, 3, 17, 47, 51, 59, 141, 151, 177, 453, 799, 1003, 2397, 2567, 2773, 3009, 7097, 7701, 8319, 8909, 21291, 26727, 47141, 120649, 141423, 151453, 361947, 418723, 454359, 1256169, 7118291, 21354873]

約数ペア:

[(1, 21354873), (3, 7118291), (17, 1256169), (47, 454359), (51, 418723), (59, 361947), (141, 151453), (151, 141423), (177, 120649), (453, 47141), (799, 26727), (1003, 21291), (2397, 8909), (2567, 8319), (2773, 7701), (3009, 7097)]