17966991

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 28435968

約数和(自身を除く): 10468977

約数列:

[1, 3, 7, 21, 43, 101, 129, 197, 301, 303, 591, 707, 903, 1379, 2121, 4137, 4343, 8471, 13029, 19897, 25413, 30401, 59297, 59691, 91203, 139279, 177891, 417837, 855571, 2566713, 5988997, 17966991]

約数ペア:

[(1, 17966991), (3, 5988997), (7, 2566713), (21, 855571), (43, 417837), (101, 177891), (129, 139279), (197, 91203), (301, 59691), (303, 59297), (591, 30401), (707, 25413), (903, 19897), (1379, 13029), (2121, 8471), (4137, 4343)]