20704516

素因数分解:

$2^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 22195964

約数列:

[1, 2, 4, 7, 14, 28, 59, 83, 118, 151, 166, 236, 302, 332, 413, 581, 604, 826, 1057, 1162, 1652, 2114, 2324, 4228, 4897, 8909, 9794, 12533, 17818, 19588, 25066, 34279, 35636, 50132, 62363, 68558, 87731, 124726, 137116, 175462, 249452, 350924, 739447, 1478894, 2957788, 5176129, 10352258, 20704516]

約数ペア:

[(1, 20704516), (2, 10352258), (4, 5176129), (7, 2957788), (14, 1478894), (28, 739447), (59, 350924), (83, 249452), (118, 175462), (151, 137116), (166, 124726), (236, 87731), (302, 68558), (332, 62363), (413, 50132), (581, 35636), (604, 34279), (826, 25066), (1057, 19588), (1162, 17818), (1652, 12533), (2114, 9794), (2324, 8909), (4228, 4897)]