399689344

素因数分解:

$2^7\times {\mathrm{157}}^1\times {\mathrm{19889}}^1$

素因数の和:20060

約数の個数: 32

約数和(自身を含む): 801368100

約数和(自身を除く): 401678756

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 157, 314, 628, 1256, 2512, 5024, 10048, 19889, 20096, 39778, 79556, 159112, 318224, 636448, 1272896, 2545792, 3122573, 6245146, 12490292, 24980584, 49961168, 99922336, 199844672, 399689344]

約数ペア:

[(1, 399689344), (2, 199844672), (4, 99922336), (8, 49961168), (16, 24980584), (32, 12490292), (64, 6245146), (128, 3122573), (157, 2545792), (314, 1272896), (628, 636448), (1256, 318224), (2512, 159112), (5024, 79556), (10048, 39778), (19889, 20096)]