21015316

素因数分解:

$2^2\times 7^2\times {\mathrm{179}}^1\times {\mathrm{599}}^1$

素因数の和:796

約数の個数: 36

約数和(自身を含む): 43092000

約数和(自身を除く): 22076684

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 179, 196, 358, 599, 716, 1198, 1253, 2396, 2506, 4193, 5012, 8386, 8771, 16772, 17542, 29351, 35084, 58702, 107221, 117404, 214442, 428884, 750547, 1501094, 3002188, 5253829, 10507658, 21015316]

約数ペア:

[(1, 21015316), (2, 10507658), (4, 5253829), (7, 3002188), (14, 1501094), (28, 750547), (49, 428884), (98, 214442), (179, 117404), (196, 107221), (358, 58702), (599, 35084), (716, 29351), (1198, 17542), (1253, 16772), (2396, 8771), (2506, 8386), (4193, 5012)]