21787808

素因数分解:

$2^5\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4229}}^1$

素因数の和:4269

約数の個数: 48

約数和(自身を含む): 51166080

約数和(自身を除く): 29378272

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 92, 112, 161, 184, 224, 322, 368, 644, 736, 1288, 2576, 4229, 5152, 8458, 16916, 29603, 33832, 59206, 67664, 97267, 118412, 135328, 194534, 236824, 389068, 473648, 680869, 778136, 947296, 1361738, 1556272, 2723476, 3112544, 5446952, 10893904, 21787808]

約数ペア:

[(1, 21787808), (2, 10893904), (4, 5446952), (7, 3112544), (8, 2723476), (14, 1556272), (16, 1361738), (23, 947296), (28, 778136), (32, 680869), (46, 473648), (56, 389068), (92, 236824), (112, 194534), (161, 135328), (184, 118412), (224, 97267), (322, 67664), (368, 59206), (644, 33832), (736, 29603), (1288, 16916), (2576, 8458), (4229, 5152)]