21048198040

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1\times {\mathrm{47737}}^1$

素因数の和:47972

約数の個数: 64

約数和(自身を含む): 48326132160

約数和(自身を除く): 27277934120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 151, 292, 302, 365, 584, 604, 730, 755, 1208, 1460, 1510, 2920, 3020, 6040, 11023, 22046, 44092, 47737, 55115, 88184, 95474, 110230, 190948, 220460, 238685, 381896, 440920, 477370, 954740, 1909480, 3484801, 6969602, 7208287, 13939204, 14416574, 17424005, 27878408, 28833148, 34848010, 36041435, 57666296, 69696020, 72082870, 139392040, 144165740, 288331480, 526204951, 1052409902, 2104819804, 2631024755, 4209639608, 5262049510, 10524099020, 21048198040]

約数ペア:

[(1, 21048198040), (2, 10524099020), (4, 5262049510), (5, 4209639608), (8, 2631024755), (10, 2104819804), (20, 1052409902), (40, 526204951), (73, 288331480), (146, 144165740), (151, 139392040), (292, 72082870), (302, 69696020), (365, 57666296), (584, 36041435), (604, 34848010), (730, 28833148), (755, 27878408), (1208, 17424005), (1460, 14416574), (1510, 13939204), (2920, 7208287), (3020, 6969602), (6040, 3484801), (11023, 1909480), (22046, 954740), (44092, 477370), (47737, 440920), (55115, 381896), (88184, 238685), (95474, 220460), (110230, 190948)]