21098817

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1609}}^1$

素因数の和:1693

約数の個数: 24

約数和(自身を含む): 32148480

約数和(自身を除く): 11049663

約数列:

[1, 3, 9, 31, 47, 93, 141, 279, 423, 1457, 1609, 4371, 4827, 13113, 14481, 49879, 75623, 149637, 226869, 448911, 680607, 2344313, 7032939, 21098817]

約数ペア:

[(1, 21098817), (3, 7032939), (9, 2344313), (31, 680607), (47, 448911), (93, 226869), (141, 149637), (279, 75623), (423, 49879), (1457, 14481), (1609, 13113), (4371, 4827)]