19961620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20369}}^1$

素因数の和:20392

約数の個数: 36

約数和(自身を含む): 48765780

約数和(自身を除く): 28804160

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20369, 40738, 81476, 101845, 142583, 203690, 285166, 407380, 570332, 712915, 998081, 1425830, 1996162, 2851660, 3992324, 4990405, 9980810, 19961620]

約数ペア:

[(1, 19961620), (2, 9980810), (4, 4990405), (5, 3992324), (7, 2851660), (10, 1996162), (14, 1425830), (20, 998081), (28, 712915), (35, 570332), (49, 407380), (70, 285166), (98, 203690), (140, 142583), (196, 101845), (245, 81476), (490, 40738), (980, 20369)]