25456160

素因数分解:

$2^5\times 5^1\times {\mathrm{389}}^1\times {\mathrm{409}}^1$

素因数の和:813

約数の個数: 48

約数和(自身を含む): 60442200

約数和(自身を除く): 34986040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 389, 409, 778, 818, 1556, 1636, 1945, 2045, 3112, 3272, 3890, 4090, 6224, 6544, 7780, 8180, 12448, 13088, 15560, 16360, 31120, 32720, 62240, 65440, 159101, 318202, 636404, 795505, 1272808, 1591010, 2545616, 3182020, 5091232, 6364040, 12728080, 25456160]

約数ペア:

[(1, 25456160), (2, 12728080), (4, 6364040), (5, 5091232), (8, 3182020), (10, 2545616), (16, 1591010), (20, 1272808), (32, 795505), (40, 636404), (80, 318202), (160, 159101), (389, 65440), (409, 62240), (778, 32720), (818, 31120), (1556, 16360), (1636, 15560), (1945, 13088), (2045, 12448), (3112, 8180), (3272, 7780), (3890, 6544), (4090, 6224)]