12819280

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6967}}^1$

素因数の和:7003

約数の個数: 40

約数和(自身を含む): 31105152

約数和(自身を除く): 18285872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 6967, 13934, 27868, 34835, 55736, 69670, 111472, 139340, 160241, 278680, 320482, 557360, 640964, 801205, 1281928, 1602410, 2563856, 3204820, 6409640, 12819280]

約数ペア:

[(1, 12819280), (2, 6409640), (4, 3204820), (5, 2563856), (8, 1602410), (10, 1281928), (16, 801205), (20, 640964), (23, 557360), (40, 320482), (46, 278680), (80, 160241), (92, 139340), (115, 111472), (184, 69670), (230, 55736), (368, 34835), (460, 27868), (920, 13934), (1840, 6967)]