21065618

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1451}}^1$

素因数の和:1538

約数の個数: 32

約数和(自身を含む): 38890368

約数和(自身を除く): 17824750

約数列:

[1, 2, 7, 14, 17, 34, 61, 119, 122, 238, 427, 854, 1037, 1451, 2074, 2902, 7259, 10157, 14518, 20314, 24667, 49334, 88511, 172669, 177022, 345338, 619577, 1239154, 1504687, 3009374, 10532809, 21065618]

約数ペア:

[(1, 21065618), (2, 10532809), (7, 3009374), (14, 1504687), (17, 1239154), (34, 619577), (61, 345338), (119, 177022), (122, 172669), (238, 88511), (427, 49334), (854, 24667), (1037, 20314), (1451, 14518), (2074, 10157), (2902, 7259)]