21383215

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{263}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 31021056

約数和(自身を除く): 9637841

約数列:

[1, 5, 7, 23, 35, 101, 115, 161, 263, 505, 707, 805, 1315, 1841, 2323, 3535, 6049, 9205, 11615, 16261, 26563, 30245, 42343, 81305, 132815, 185941, 211715, 610949, 929705, 3054745, 4276643, 21383215]

約数ペア:

[(1, 21383215), (5, 4276643), (7, 3054745), (23, 929705), (35, 610949), (101, 211715), (115, 185941), (161, 132815), (263, 81305), (505, 42343), (707, 30245), (805, 26563), (1315, 16261), (1841, 11615), (2323, 9205), (3535, 6049)]