21645005990

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{311}}^1\times {\mathrm{68909}}^1$

素因数の和:69328

約数の個数: 32

約数和(自身を含む): 39473853120

約数和(自身を除く): 17828847130

約数列:

[1, 2, 5, 10, 101, 202, 311, 505, 622, 1010, 1555, 3110, 31411, 62822, 68909, 137818, 157055, 314110, 344545, 689090, 6959809, 13919618, 21430699, 34799045, 42861398, 69598090, 107153495, 214306990, 2164500599, 4329001198, 10822502995, 21645005990]

約数ペア:

[(1, 21645005990), (2, 10822502995), (5, 4329001198), (10, 2164500599), (101, 214306990), (202, 107153495), (311, 69598090), (505, 42861398), (622, 34799045), (1010, 21430699), (1555, 13919618), (3110, 6959809), (31411, 689090), (62822, 344545), (68909, 314110), (137818, 157055)]