21445851

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{911}}^1$

素因数の和:999

約数の個数: 32

約数和(自身を含む): 35020800

約数和(自身を除く): 13574949

約数列:

[1, 3, 7, 19, 21, 57, 59, 133, 177, 399, 413, 911, 1121, 1239, 2733, 3363, 6377, 7847, 17309, 19131, 23541, 51927, 53749, 121163, 161247, 363489, 376243, 1021231, 1128729, 3063693, 7148617, 21445851]

約数ペア:

[(1, 21445851), (3, 7148617), (7, 3063693), (19, 1128729), (21, 1021231), (57, 376243), (59, 363489), (133, 161247), (177, 121163), (399, 53749), (413, 51927), (911, 23541), (1121, 19131), (1239, 17309), (2733, 7847), (3363, 6377)]