18684820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1103}}^1$

素因数の和:1141

約数の個数: 72

約数和(自身を含む): 49335552

約数和(自身を除く): 30650732

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1103, 1210, 1540, 1694, 2206, 2420, 3388, 4235, 4412, 5515, 7721, 8470, 11030, 12133, 15442, 16940, 22060, 24266, 30884, 38605, 48532, 60665, 77210, 84931, 121330, 133463, 154420, 169862, 242660, 266926, 339724, 424655, 533852, 667315, 849310, 934241, 1334630, 1698620, 1868482, 2669260, 3736964, 4671205, 9342410, 18684820]

約数ペア:

[(1, 18684820), (2, 9342410), (4, 4671205), (5, 3736964), (7, 2669260), (10, 1868482), (11, 1698620), (14, 1334630), (20, 934241), (22, 849310), (28, 667315), (35, 533852), (44, 424655), (55, 339724), (70, 266926), (77, 242660), (110, 169862), (121, 154420), (140, 133463), (154, 121330), (220, 84931), (242, 77210), (308, 60665), (385, 48532), (484, 38605), (605, 30884), (770, 24266), (847, 22060), (1103, 16940), (1210, 15442), (1540, 12133), (1694, 11030), (2206, 8470), (2420, 7721), (3388, 5515), (4235, 4412)]