28651520

素因数分解:

$2^{12}\times 5^1\times {\mathrm{1399}}^1$

素因数の和:1428

約数の個数: 52

約数和(自身を含む): 68804400

約数和(自身を除く): 40152880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 1399, 2048, 2560, 2798, 4096, 5120, 5596, 6995, 10240, 11192, 13990, 20480, 22384, 27980, 44768, 55960, 89536, 111920, 179072, 223840, 358144, 447680, 716288, 895360, 1432576, 1790720, 2865152, 3581440, 5730304, 7162880, 14325760, 28651520]

約数ペア:

[(1, 28651520), (2, 14325760), (4, 7162880), (5, 5730304), (8, 3581440), (10, 2865152), (16, 1790720), (20, 1432576), (32, 895360), (40, 716288), (64, 447680), (80, 358144), (128, 223840), (160, 179072), (256, 111920), (320, 89536), (512, 55960), (640, 44768), (1024, 27980), (1280, 22384), (1399, 20480), (2048, 13990), (2560, 11192), (2798, 10240), (4096, 6995), (5120, 5596)]