28131285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{557}}^1$

素因数の和:622

約数の個数: 64

約数和(自身を含む): 56996352

約数和(自身を除く): 28865067

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 37, 39, 65, 91, 105, 111, 185, 195, 259, 273, 455, 481, 555, 557, 777, 1295, 1365, 1443, 1671, 2405, 2785, 3367, 3885, 3899, 7215, 7241, 8355, 10101, 11697, 16835, 19495, 20609, 21723, 36205, 50505, 50687, 58485, 61827, 103045, 108615, 144263, 152061, 253435, 267917, 309135, 432789, 721315, 760305, 803751, 1339585, 1875419, 2163945, 4018755, 5626257, 9377095, 28131285]

約数ペア:

[(1, 28131285), (3, 9377095), (5, 5626257), (7, 4018755), (13, 2163945), (15, 1875419), (21, 1339585), (35, 803751), (37, 760305), (39, 721315), (65, 432789), (91, 309135), (105, 267917), (111, 253435), (185, 152061), (195, 144263), (259, 108615), (273, 103045), (455, 61827), (481, 58485), (555, 50687), (557, 50505), (777, 36205), (1295, 21723), (1365, 20609), (1443, 19495), (1671, 16835), (2405, 11697), (2785, 10101), (3367, 8355), (3885, 7241), (3899, 7215)]