31720240

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{9221}}^1$

素因数の和:9277

約数の個数: 40

約数和(自身を含む): 75472848

約数和(自身を除く): 43752608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 9221, 18442, 36884, 46105, 73768, 92210, 147536, 184420, 368840, 396503, 737680, 793006, 1586012, 1982515, 3172024, 3965030, 6344048, 7930060, 15860120, 31720240]

約数ペア:

[(1, 31720240), (2, 15860120), (4, 7930060), (5, 6344048), (8, 3965030), (10, 3172024), (16, 1982515), (20, 1586012), (40, 793006), (43, 737680), (80, 396503), (86, 368840), (172, 184420), (215, 147536), (344, 92210), (430, 73768), (688, 46105), (860, 36884), (1720, 18442), (3440, 9221)]