1600000040

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{754717}}^1$

素因数の和:754781

約数の個数: 32

約数和(自身を含む): 3667929480

約数和(自身を除く): 2067929440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 754717, 1509434, 3018868, 3773585, 6037736, 7547170, 15094340, 30188680, 40000001, 80000002, 160000004, 200000005, 320000008, 400000010, 800000020, 1600000040]

約数ペア:

[(1, 1600000040), (2, 800000020), (4, 400000010), (5, 320000008), (8, 200000005), (10, 160000004), (20, 80000002), (40, 40000001), (53, 30188680), (106, 15094340), (212, 7547170), (265, 6037736), (424, 3773585), (530, 3018868), (1060, 1509434), (2120, 754717)]