20563340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20983}}^1$

素因数の和:21006

約数の個数: 36

約数和(自身を含む): 50235696

約数和(自身を除く): 29672356

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20983, 41966, 83932, 104915, 146881, 209830, 293762, 419660, 587524, 734405, 1028167, 1468810, 2056334, 2937620, 4112668, 5140835, 10281670, 20563340]

約数ペア:

[(1, 20563340), (2, 10281670), (4, 5140835), (5, 4112668), (7, 2937620), (10, 2056334), (14, 1468810), (20, 1028167), (28, 734405), (35, 587524), (49, 419660), (70, 293762), (98, 209830), (140, 146881), (196, 104915), (245, 83932), (490, 41966), (980, 20983)]