7997840

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:659

約数の個数: 40

約数和(自身を含む): 18715320

約数和(自身を除く): 10717480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 389, 514, 778, 1028, 1285, 1556, 1945, 2056, 2570, 3112, 3890, 4112, 5140, 6224, 7780, 10280, 15560, 20560, 31120, 99973, 199946, 399892, 499865, 799784, 999730, 1599568, 1999460, 3998920, 7997840]

約数ペア:

[(1, 7997840), (2, 3998920), (4, 1999460), (5, 1599568), (8, 999730), (10, 799784), (16, 499865), (20, 399892), (40, 199946), (80, 99973), (257, 31120), (389, 20560), (514, 15560), (778, 10280), (1028, 7780), (1285, 6224), (1556, 5140), (1945, 4112), (2056, 3890), (2570, 3112)]