20937760

素因数分解:

$2^5\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1223}}^1$

素因数の和:1345

約数の個数: 48

約数和(自身を含む): 49968576

約数和(自身を除く): 29030816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 107, 160, 214, 428, 535, 856, 1070, 1223, 1712, 2140, 2446, 3424, 4280, 4892, 6115, 8560, 9784, 12230, 17120, 19568, 24460, 39136, 48920, 97840, 130861, 195680, 261722, 523444, 654305, 1046888, 1308610, 2093776, 2617220, 4187552, 5234440, 10468880, 20937760]

約数ペア:

[(1, 20937760), (2, 10468880), (4, 5234440), (5, 4187552), (8, 2617220), (10, 2093776), (16, 1308610), (20, 1046888), (32, 654305), (40, 523444), (80, 261722), (107, 195680), (160, 130861), (214, 97840), (428, 48920), (535, 39136), (856, 24460), (1070, 19568), (1223, 17120), (1712, 12230), (2140, 9784), (2446, 8560), (3424, 6115), (4280, 4892)]