28290003

素因数分解:

$3^1\times 7^2\times {\mathrm{223}}^1\times {\mathrm{863}}^1$

素因数の和:1103

約数の個数: 24

約数和(自身を含む): 44126208

約数和(自身を除く): 15836205

約数列:

[1, 3, 7, 21, 49, 147, 223, 669, 863, 1561, 2589, 4683, 6041, 10927, 18123, 32781, 42287, 126861, 192449, 577347, 1347143, 4041429, 9430001, 28290003]

約数ペア:

[(1, 28290003), (3, 9430001), (7, 4041429), (21, 1347143), (49, 577347), (147, 192449), (223, 126861), (669, 42287), (863, 32781), (1561, 18123), (2589, 10927), (4683, 6041)]