90204040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1217}}^1$

素因数の和:1354

約数の個数: 64

約数和(自身を含む): 217047600

約数和(自身を除く): 126843560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 109, 136, 170, 218, 340, 436, 545, 680, 872, 1090, 1217, 1853, 2180, 2434, 3706, 4360, 4868, 6085, 7412, 9265, 9736, 12170, 14824, 18530, 20689, 24340, 37060, 41378, 48680, 74120, 82756, 103445, 132653, 165512, 206890, 265306, 413780, 530612, 663265, 827560, 1061224, 1326530, 2255101, 2653060, 4510202, 5306120, 9020404, 11275505, 18040808, 22551010, 45102020, 90204040]

約数ペア:

[(1, 90204040), (2, 45102020), (4, 22551010), (5, 18040808), (8, 11275505), (10, 9020404), (17, 5306120), (20, 4510202), (34, 2653060), (40, 2255101), (68, 1326530), (85, 1061224), (109, 827560), (136, 663265), (170, 530612), (218, 413780), (340, 265306), (436, 206890), (545, 165512), (680, 132653), (872, 103445), (1090, 82756), (1217, 74120), (1853, 48680), (2180, 41378), (2434, 37060), (3706, 24340), (4360, 20689), (4868, 18530), (6085, 14824), (7412, 12170), (9265, 9736)]