21178140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8609}}^1$

素因数の和:8662

約数の個数: 48

約数和(自身を含む): 60752160

約数和(自身を除く): 39574020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1230, 2460, 8609, 17218, 25827, 34436, 43045, 51654, 86090, 103308, 129135, 172180, 258270, 352969, 516540, 705938, 1058907, 1411876, 1764845, 2117814, 3529690, 4235628, 5294535, 7059380, 10589070, 21178140]

約数ペア:

[(1, 21178140), (2, 10589070), (3, 7059380), (4, 5294535), (5, 4235628), (6, 3529690), (10, 2117814), (12, 1764845), (15, 1411876), (20, 1058907), (30, 705938), (41, 516540), (60, 352969), (82, 258270), (123, 172180), (164, 129135), (205, 103308), (246, 86090), (410, 51654), (492, 43045), (615, 34436), (820, 25827), (1230, 17218), (2460, 8609)]