20003720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4133}}^1$

素因数の和:4166

約数の個数: 48

約数和(自身を含む): 49483980

約数和(自身を除く): 29480260

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4133, 4840, 8266, 16532, 20665, 33064, 41330, 45463, 82660, 90926, 165320, 181852, 227315, 363704, 454630, 500093, 909260, 1000186, 1818520, 2000372, 2500465, 4000744, 5000930, 10001860, 20003720]

約数ペア:

[(1, 20003720), (2, 10001860), (4, 5000930), (5, 4000744), (8, 2500465), (10, 2000372), (11, 1818520), (20, 1000186), (22, 909260), (40, 500093), (44, 454630), (55, 363704), (88, 227315), (110, 181852), (121, 165320), (220, 90926), (242, 82660), (440, 45463), (484, 41330), (605, 33064), (968, 20665), (1210, 16532), (2420, 8266), (4133, 4840)]