30781653

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 51217920

約数和(自身を除く): 20436267

約数列:

[1, 3, 7, 19, 21, 49, 57, 103, 107, 133, 147, 309, 321, 399, 721, 749, 931, 1957, 2033, 2163, 2247, 2793, 5047, 5243, 5871, 6099, 11021, 13699, 14231, 15141, 15729, 33063, 41097, 42693, 77147, 95893, 99617, 209399, 231441, 287679, 298851, 540029, 628197, 1465793, 1620087, 4397379, 10260551, 30781653]

約数ペア:

[(1, 30781653), (3, 10260551), (7, 4397379), (19, 1620087), (21, 1465793), (49, 628197), (57, 540029), (103, 298851), (107, 287679), (133, 231441), (147, 209399), (309, 99617), (321, 95893), (399, 77147), (721, 42693), (749, 41097), (931, 33063), (1957, 15729), (2033, 15141), (2163, 14231), (2247, 13699), (2793, 11021), (5047, 6099), (5243, 5871)]