19891060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20297}}^1$

素因数の和:20320

約数の個数: 36

約数和(自身を含む): 48593412

約数和(自身を除く): 28702352

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20297, 40594, 81188, 101485, 142079, 202970, 284158, 405940, 568316, 710395, 994553, 1420790, 1989106, 2841580, 3978212, 4972765, 9945530, 19891060]

約数ペア:

[(1, 19891060), (2, 9945530), (4, 4972765), (5, 3978212), (7, 2841580), (10, 1989106), (14, 1420790), (20, 994553), (28, 710395), (35, 568316), (49, 405940), (70, 284158), (98, 202970), (140, 142079), (196, 101485), (245, 81188), (490, 40594), (980, 20297)]