1639019620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1672469}}^1$

素因数の和:1672492

約数の個数: 36

約数和(自身を含む): 4003893180

約数和(自身を除く): 2364873560

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1672469, 3344938, 6689876, 8362345, 11707283, 16724690, 23414566, 33449380, 46829132, 58536415, 81950981, 117072830, 163901962, 234145660, 327803924, 409754905, 819509810, 1639019620]

約数ペア:

[(1, 1639019620), (2, 819509810), (4, 409754905), (5, 327803924), (7, 234145660), (10, 163901962), (14, 117072830), (20, 81950981), (28, 58536415), (35, 46829132), (49, 33449380), (70, 23414566), (98, 16724690), (140, 11707283), (196, 8362345), (245, 6689876), (490, 3344938), (980, 1672469)]