20374280

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4673}}^1$

素因数の和:4793

約数の個数: 32

約数和(自身を含む): 46272600

約数和(自身を除く): 25898320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4673, 9346, 18692, 23365, 37384, 46730, 93460, 186920, 509357, 1018714, 2037428, 2546785, 4074856, 5093570, 10187140, 20374280]

約数ペア:

[(1, 20374280), (2, 10187140), (4, 5093570), (5, 4074856), (8, 2546785), (10, 2037428), (20, 1018714), (40, 509357), (109, 186920), (218, 93460), (436, 46730), (545, 37384), (872, 23365), (1090, 18692), (2180, 9346), (4360, 4673)]