21656368

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{773}}^1$

素因数の和:901

約数の個数: 40

約数和(自身を含む): 44916768

約数和(自身を除く): 23260400

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 103, 136, 206, 272, 412, 773, 824, 1546, 1648, 1751, 3092, 3502, 6184, 7004, 12368, 13141, 14008, 26282, 28016, 52564, 79619, 105128, 159238, 210256, 318476, 636952, 1273904, 1353523, 2707046, 5414092, 10828184, 21656368]

約数ペア:

[(1, 21656368), (2, 10828184), (4, 5414092), (8, 2707046), (16, 1353523), (17, 1273904), (34, 636952), (68, 318476), (103, 210256), (136, 159238), (206, 105128), (272, 79619), (412, 52564), (773, 28016), (824, 26282), (1546, 14008), (1648, 13141), (1751, 12368), (3092, 7004), (3502, 6184)]