18849380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{7789}}^1$

素因数の和:7820

約数の個数: 36

約数和(自身を含む): 43514940

約数和(自身を除く): 24665560

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 7789, 15578, 31156, 38945, 77890, 85679, 155780, 171358, 342716, 428395, 856790, 942469, 1713580, 1884938, 3769876, 4712345, 9424690, 18849380]

約数ペア:

[(1, 18849380), (2, 9424690), (4, 4712345), (5, 3769876), (10, 1884938), (11, 1713580), (20, 942469), (22, 856790), (44, 428395), (55, 342716), (110, 171358), (121, 155780), (220, 85679), (242, 77890), (484, 38945), (605, 31156), (1210, 15578), (2420, 7789)]