28782663

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 51609600

約数和(自身を除く): 22826937

約数列:

[1, 3, 7, 13, 19, 21, 31, 39, 57, 91, 93, 133, 179, 217, 247, 273, 399, 403, 537, 589, 651, 741, 1209, 1253, 1729, 1767, 2327, 2821, 3401, 3759, 4123, 5187, 5549, 6981, 7657, 8463, 10203, 12369, 16289, 16647, 22971, 23807, 38843, 44213, 48867, 53599, 71421, 72137, 105431, 116529, 132639, 160797, 216411, 309491, 316293, 504959, 738017, 928473, 1370603, 1514877, 2214051, 4111809, 9594221, 28782663]

約数ペア:

[(1, 28782663), (3, 9594221), (7, 4111809), (13, 2214051), (19, 1514877), (21, 1370603), (31, 928473), (39, 738017), (57, 504959), (91, 316293), (93, 309491), (133, 216411), (179, 160797), (217, 132639), (247, 116529), (273, 105431), (399, 72137), (403, 71421), (537, 53599), (589, 48867), (651, 44213), (741, 38843), (1209, 23807), (1253, 22971), (1729, 16647), (1767, 16289), (2327, 12369), (2821, 10203), (3401, 8463), (3759, 7657), (4123, 6981), (5187, 5549)]