21283955

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{937}}^1$

素因数の和:1019

約数の個数: 32

約数和(自身を含む): 32417280

約数和(自身を除く): 11133325

約数列:

[1, 5, 7, 11, 35, 55, 59, 77, 295, 385, 413, 649, 937, 2065, 3245, 4543, 4685, 6559, 10307, 22715, 32795, 51535, 55283, 72149, 276415, 360745, 386981, 608113, 1934905, 3040565, 4256791, 21283955]

約数ペア:

[(1, 21283955), (5, 4256791), (7, 3040565), (11, 1934905), (35, 608113), (55, 386981), (59, 360745), (77, 276415), (295, 72149), (385, 55283), (413, 51535), (649, 32795), (937, 22715), (2065, 10307), (3245, 6559), (4543, 4685)]