21470620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 46448640

約数和(自身を除く): 24978020

約数列:

[1, 2, 4, 5, 10, 20, 79, 107, 127, 158, 214, 254, 316, 395, 428, 508, 535, 635, 790, 1070, 1270, 1580, 2140, 2540, 8453, 10033, 13589, 16906, 20066, 27178, 33812, 40132, 42265, 50165, 54356, 67945, 84530, 100330, 135890, 169060, 200660, 271780, 1073531, 2147062, 4294124, 5367655, 10735310, 21470620]

約数ペア:

[(1, 21470620), (2, 10735310), (4, 5367655), (5, 4294124), (10, 2147062), (20, 1073531), (79, 271780), (107, 200660), (127, 169060), (158, 135890), (214, 100330), (254, 84530), (316, 67945), (395, 54356), (428, 50165), (508, 42265), (535, 40132), (635, 33812), (790, 27178), (1070, 20066), (1270, 16906), (1580, 13589), (2140, 10033), (2540, 8453)]