21254541

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{911}}^1$

素因数の和:1033

約数の個数: 32

約数和(自身を含む): 35721216

約数和(自身を除く): 14466675

約数列:

[1, 3, 7, 11, 21, 33, 77, 101, 231, 303, 707, 911, 1111, 2121, 2733, 3333, 6377, 7777, 10021, 19131, 23331, 30063, 70147, 92011, 210441, 276033, 644077, 1012121, 1932231, 3036363, 7084847, 21254541]

約数ペア:

[(1, 21254541), (3, 7084847), (7, 3036363), (11, 1932231), (21, 1012121), (33, 644077), (77, 276033), (101, 210441), (231, 92011), (303, 70147), (707, 30063), (911, 23331), (1111, 19131), (2121, 10021), (2733, 7777), (3333, 6377)]