39977840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71389}}^1$

素因数の和:71409

約数の個数: 40

約数和(自身を含む): 106228320

約数和(自身を除く): 66250480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 71389, 142778, 285556, 356945, 499723, 571112, 713890, 999446, 1142224, 1427780, 1998892, 2498615, 2855560, 3997784, 4997230, 5711120, 7995568, 9994460, 19988920, 39977840]

約数ペア:

[(1, 39977840), (2, 19988920), (4, 9994460), (5, 7995568), (7, 5711120), (8, 4997230), (10, 3997784), (14, 2855560), (16, 2498615), (20, 1998892), (28, 1427780), (35, 1142224), (40, 999446), (56, 713890), (70, 571112), (80, 499723), (112, 356945), (140, 285556), (280, 142778), (560, 71389)]