155120721

素因数分解:

$3^1\times 7^3\times {\mathrm{127}}^1\times {\mathrm{1187}}^1$

素因数の和:1338

約数の個数: 32

約数和(自身を含む): 243302400

約数和(自身を除く): 88181679

約数列:

[1, 3, 7, 21, 49, 127, 147, 343, 381, 889, 1029, 1187, 2667, 3561, 6223, 8309, 18669, 24927, 43561, 58163, 130683, 150749, 174489, 407141, 452247, 1055243, 1221423, 3165729, 7386701, 22160103, 51706907, 155120721]

約数ペア:

[(1, 155120721), (3, 51706907), (7, 22160103), (21, 7386701), (49, 3165729), (127, 1221423), (147, 1055243), (343, 452247), (381, 407141), (889, 174489), (1029, 150749), (1187, 130683), (2667, 58163), (3561, 43561), (6223, 24927), (8309, 18669)]