261643340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{266983}}^1$

素因数の和:267006

約数の個数: 36

約数和(自身を含む): 639159696

約数和(自身を除く): 377516356

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 266983, 533966, 1067932, 1334915, 1868881, 2669830, 3737762, 5339660, 7475524, 9344405, 13082167, 18688810, 26164334, 37377620, 52328668, 65410835, 130821670, 261643340]

約数ペア:

[(1, 261643340), (2, 130821670), (4, 65410835), (5, 52328668), (7, 37377620), (10, 26164334), (14, 18688810), (20, 13082167), (28, 9344405), (35, 7475524), (49, 5339660), (70, 3737762), (98, 2669830), (140, 1868881), (196, 1334915), (245, 1067932), (490, 533966), (980, 266983)]