20281347

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:281

約数の個数: 40

約数和(自身を含む): 32199552

約数和(自身を除く): 11918205

約数列:

[1, 3, 9, 27, 31, 41, 81, 93, 123, 197, 279, 369, 591, 837, 1107, 1271, 1773, 2511, 3321, 3813, 5319, 6107, 8077, 11439, 15957, 18321, 24231, 34317, 54963, 72693, 102951, 164889, 218079, 250387, 494667, 654237, 751161, 2253483, 6760449, 20281347]

約数ペア:

[(1, 20281347), (3, 6760449), (9, 2253483), (27, 751161), (31, 654237), (41, 494667), (81, 250387), (93, 218079), (123, 164889), (197, 102951), (279, 72693), (369, 54963), (591, 34317), (837, 24231), (1107, 18321), (1271, 15957), (1773, 11439), (2511, 8077), (3321, 6107), (3813, 5319)]