660165040

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{75707}}^1$

素因数の和:75829

約数の個数: 40

約数和(自身を含む): 1548985680

約数和(自身を除く): 888820640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 75707, 151414, 302828, 378535, 605656, 757070, 1211312, 1514140, 3028280, 6056560, 8252063, 16504126, 33008252, 41260315, 66016504, 82520630, 132033008, 165041260, 330082520, 660165040]

約数ペア:

[(1, 660165040), (2, 330082520), (4, 165041260), (5, 132033008), (8, 82520630), (10, 66016504), (16, 41260315), (20, 33008252), (40, 16504126), (80, 8252063), (109, 6056560), (218, 3028280), (436, 1514140), (545, 1211312), (872, 757070), (1090, 605656), (1744, 378535), (2180, 302828), (4360, 151414), (8720, 75707)]