28353507

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 48760992

約数和(自身を除く): 20407485

約数列:

[1, 3, 7, 13, 21, 37, 39, 49, 91, 111, 147, 259, 273, 401, 481, 637, 777, 1203, 1443, 1813, 1911, 2807, 3367, 5213, 5439, 8421, 10101, 14837, 15639, 19649, 23569, 36491, 44511, 58947, 70707, 103859, 109473, 192881, 255437, 311577, 578643, 727013, 766311, 1350167, 2181039, 4050501, 9451169, 28353507]

約数ペア:

[(1, 28353507), (3, 9451169), (7, 4050501), (13, 2181039), (21, 1350167), (37, 766311), (39, 727013), (49, 578643), (91, 311577), (111, 255437), (147, 192881), (259, 109473), (273, 103859), (401, 70707), (481, 58947), (637, 44511), (777, 36491), (1203, 23569), (1443, 19649), (1813, 15639), (1911, 14837), (2807, 10101), (3367, 8421), (5213, 5439)]