20405056

素因数分解:

$2^6\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1231}}^1$

素因数の和:1287

約数の個数: 56

約数和(自身を含む): 47565056

約数和(自身を除く): 27160000

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 56, 64, 74, 112, 148, 224, 259, 296, 448, 518, 592, 1036, 1184, 1231, 2072, 2368, 2462, 4144, 4924, 8288, 8617, 9848, 16576, 17234, 19696, 34468, 39392, 45547, 68936, 78784, 91094, 137872, 182188, 275744, 318829, 364376, 551488, 637658, 728752, 1275316, 1457504, 2550632, 2915008, 5101264, 10202528, 20405056]

約数ペア:

[(1, 20405056), (2, 10202528), (4, 5101264), (7, 2915008), (8, 2550632), (14, 1457504), (16, 1275316), (28, 728752), (32, 637658), (37, 551488), (56, 364376), (64, 318829), (74, 275744), (112, 182188), (148, 137872), (224, 91094), (259, 78784), (296, 68936), (448, 45547), (518, 39392), (592, 34468), (1036, 19696), (1184, 17234), (1231, 16576), (2072, 9848), (2368, 8617), (2462, 8288), (4144, 4924)]