21118141121

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{541}}^1\times {\mathrm{3229}}^1$

素因数の和:3945

約数の個数: 32

約数和(自身を含む): 26554010880

約数和(自身を除く): 5435869759

約数列:

[1, 7, 11, 77, 157, 541, 1099, 1727, 3229, 3787, 5951, 12089, 22603, 35519, 41657, 84937, 248633, 506953, 594559, 934307, 1746889, 3548671, 5576483, 6540149, 12228223, 19215779, 39035381, 134510453, 274261573, 1919831011, 3016877303, 21118141121]

約数ペア:

[(1, 21118141121), (7, 3016877303), (11, 1919831011), (77, 274261573), (157, 134510453), (541, 39035381), (1099, 19215779), (1727, 12228223), (3229, 6540149), (3787, 5576483), (5951, 3548671), (12089, 1746889), (22603, 934307), (35519, 594559), (41657, 506953), (84937, 248633)]