204039280

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{23399}}^1$

素因数の和:23521

約数の個数: 40

約数和(自身を含む): 478764000

約数和(自身を除く): 274724720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 23399, 46798, 93596, 116995, 187192, 233990, 374384, 467980, 935960, 1871920, 2550491, 5100982, 10201964, 12752455, 20403928, 25504910, 40807856, 51009820, 102019640, 204039280]

約数ペア:

[(1, 204039280), (2, 102019640), (4, 51009820), (5, 40807856), (8, 25504910), (10, 20403928), (16, 12752455), (20, 10201964), (40, 5100982), (80, 2550491), (109, 1871920), (218, 935960), (436, 467980), (545, 374384), (872, 233990), (1090, 187192), (1744, 116995), (2180, 93596), (4360, 46798), (8720, 23399)]