28886529

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 47409408

約数和(自身を除く): 18522879

約数列:

[1, 3, 7, 21, 37, 47, 49, 111, 113, 141, 147, 259, 329, 339, 777, 791, 987, 1739, 1813, 2303, 2373, 4181, 5217, 5311, 5439, 5537, 6909, 12173, 12543, 15933, 16611, 29267, 36519, 37177, 85211, 87801, 111531, 196507, 204869, 255633, 260239, 589521, 614607, 780717, 1375549, 4126647, 9628843, 28886529]

約数ペア:

[(1, 28886529), (3, 9628843), (7, 4126647), (21, 1375549), (37, 780717), (47, 614607), (49, 589521), (111, 260239), (113, 255633), (141, 204869), (147, 196507), (259, 111531), (329, 87801), (339, 85211), (777, 37177), (791, 36519), (987, 29267), (1739, 16611), (1813, 15933), (2303, 12543), (2373, 12173), (4181, 6909), (5217, 5537), (5311, 5439)]