21081172

素因数分解:

$2^2\times 7^2\times {\mathrm{59}}^1\times {\mathrm{1823}}^1$

素因数の和:1900

約数の個数: 36

約数和(自身を含む): 43666560

約数和(自身を除く): 22585388

約数列:

[1, 2, 4, 7, 14, 28, 49, 59, 98, 118, 196, 236, 413, 826, 1652, 1823, 2891, 3646, 5782, 7292, 11564, 12761, 25522, 51044, 89327, 107557, 178654, 215114, 357308, 430228, 752899, 1505798, 3011596, 5270293, 10540586, 21081172]

約数ペア:

[(1, 21081172), (2, 10540586), (4, 5270293), (7, 3011596), (14, 1505798), (28, 752899), (49, 430228), (59, 357308), (98, 215114), (118, 178654), (196, 107557), (236, 89327), (413, 51044), (826, 25522), (1652, 12761), (1823, 11564), (2891, 7292), (3646, 5782)]