65240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{233}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 168480

約数和(自身を除く): 103240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 233, 280, 466, 932, 1165, 1631, 1864, 2330, 3262, 4660, 6524, 8155, 9320, 13048, 16310, 32620, 65240]

約数ペア:

[(1, 65240), (2, 32620), (4, 16310), (5, 13048), (7, 9320), (8, 8155), (10, 6524), (14, 4660), (20, 3262), (28, 2330), (35, 1864), (40, 1631), (56, 1165), (70, 932), (140, 466), (233, 280)]