20800605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:346

約数の個数: 64

約数和(自身を含む): 41361408

約数和(自身を除く): 20560803

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 43, 51, 85, 105, 119, 129, 215, 255, 271, 301, 357, 595, 645, 731, 813, 903, 1355, 1505, 1785, 1897, 2193, 3655, 4065, 4515, 4607, 5117, 5691, 9485, 10965, 11653, 13821, 15351, 23035, 25585, 28455, 32249, 34959, 58265, 69105, 76755, 81571, 96747, 161245, 174795, 198101, 244713, 407855, 483735, 594303, 990505, 1223565, 1386707, 2971515, 4160121, 6933535, 20800605]

約数ペア:

[(1, 20800605), (3, 6933535), (5, 4160121), (7, 2971515), (15, 1386707), (17, 1223565), (21, 990505), (35, 594303), (43, 483735), (51, 407855), (85, 244713), (105, 198101), (119, 174795), (129, 161245), (215, 96747), (255, 81571), (271, 76755), (301, 69105), (357, 58265), (595, 34959), (645, 32249), (731, 28455), (813, 25585), (903, 23035), (1355, 15351), (1505, 13821), (1785, 11653), (1897, 10965), (2193, 9485), (3655, 5691), (4065, 5117), (4515, 4607)]