213719380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{218081}}^1$

素因数の和:218104

約数の個数: 36

約数和(自身を含む): 522088308

約数和(自身を除く): 308368928

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 218081, 436162, 872324, 1090405, 1526567, 2180810, 3053134, 4361620, 6106268, 7632835, 10685969, 15265670, 21371938, 30531340, 42743876, 53429845, 106859690, 213719380]

約数ペア:

[(1, 213719380), (2, 106859690), (4, 53429845), (5, 42743876), (7, 30531340), (10, 21371938), (14, 15265670), (20, 10685969), (28, 7632835), (35, 6106268), (49, 4361620), (70, 3053134), (98, 2180810), (140, 1526567), (196, 1090405), (245, 872324), (490, 436162), (980, 218081)]