18520460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{503}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 44706816

約数和(自身を除く): 26186356

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 263, 503, 526, 1006, 1052, 1315, 1841, 2012, 2515, 2630, 3521, 3682, 5030, 5260, 7042, 7364, 9205, 10060, 14084, 17605, 18410, 35210, 36820, 70420, 132289, 264578, 529156, 661445, 926023, 1322890, 1852046, 2645780, 3704092, 4630115, 9260230, 18520460]

約数ペア:

[(1, 18520460), (2, 9260230), (4, 4630115), (5, 3704092), (7, 2645780), (10, 1852046), (14, 1322890), (20, 926023), (28, 661445), (35, 529156), (70, 264578), (140, 132289), (263, 70420), (503, 36820), (526, 35210), (1006, 18410), (1052, 17605), (1315, 14084), (1841, 10060), (2012, 9205), (2515, 7364), (2630, 7042), (3521, 5260), (3682, 5030)]