18420680

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8689}}^1$

素因数の和:8753

約数の個数: 32

約数和(自身を含む): 42233400

約数和(自身を除く): 23812720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 8689, 17378, 34756, 43445, 69512, 86890, 173780, 347560, 460517, 921034, 1842068, 2302585, 3684136, 4605170, 9210340, 18420680]

約数ペア:

[(1, 18420680), (2, 9210340), (4, 4605170), (5, 3684136), (8, 2302585), (10, 1842068), (20, 921034), (40, 460517), (53, 347560), (106, 173780), (212, 86890), (265, 69512), (424, 43445), (530, 34756), (1060, 17378), (2120, 8689)]