28806520

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{6607}}^1$

素因数の和:6727

約数の個数: 32

約数和(自身を含む): 65419200

約数和(自身を除く): 36612680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 6607, 13214, 26428, 33035, 52856, 66070, 132140, 264280, 720163, 1440326, 2880652, 3600815, 5761304, 7201630, 14403260, 28806520]

約数ペア:

[(1, 28806520), (2, 14403260), (4, 7201630), (5, 5761304), (8, 3600815), (10, 2880652), (20, 1440326), (40, 720163), (109, 264280), (218, 132140), (436, 66070), (545, 52856), (872, 33035), (1090, 26428), (2180, 13214), (4360, 6607)]