81814239

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 137912320

約数和(自身を除く): 56098081

約数列:

[1, 3, 9, 13, 27, 31, 39, 73, 93, 103, 117, 219, 279, 309, 351, 403, 657, 837, 927, 949, 1209, 1339, 1971, 2263, 2781, 2847, 3193, 3627, 4017, 6789, 7519, 8541, 9579, 10881, 12051, 20367, 22557, 25623, 28737, 29419, 36153, 41509, 61101, 67671, 86211, 88257, 97747, 124527, 203013, 233089, 264771, 293241, 373581, 699267, 794313, 879723, 1120743, 2097801, 2639169, 3030157, 6293403, 9090471, 27271413, 81814239]

約数ペア:

[(1, 81814239), (3, 27271413), (9, 9090471), (13, 6293403), (27, 3030157), (31, 2639169), (39, 2097801), (73, 1120743), (93, 879723), (103, 794313), (117, 699267), (219, 373581), (279, 293241), (309, 264771), (351, 233089), (403, 203013), (657, 124527), (837, 97747), (927, 88257), (949, 86211), (1209, 67671), (1339, 61101), (1971, 41509), (2263, 36153), (2781, 29419), (2847, 28737), (3193, 25623), (3627, 22557), (4017, 20367), (6789, 12051), (7519, 10881), (8541, 9579)]