20996870020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{541}}^1\times {\mathrm{277223}}^1$

素因数の和:277780

約数の個数: 48

約数和(自身を含む): 50485817088

約数和(自身を除く): 29488947068

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 541, 1082, 2164, 2705, 3787, 5410, 7574, 10820, 15148, 18935, 37870, 75740, 277223, 554446, 1108892, 1386115, 1940561, 2772230, 3881122, 5544460, 7762244, 9702805, 19405610, 38811220, 149977643, 299955286, 599910572, 749888215, 1049843501, 1499776430, 2099687002, 2999552860, 4199374004, 5249217505, 10498435010, 20996870020]

約数ペア:

[(1, 20996870020), (2, 10498435010), (4, 5249217505), (5, 4199374004), (7, 2999552860), (10, 2099687002), (14, 1499776430), (20, 1049843501), (28, 749888215), (35, 599910572), (70, 299955286), (140, 149977643), (541, 38811220), (1082, 19405610), (2164, 9702805), (2705, 7762244), (3787, 5544460), (5410, 3881122), (7574, 2772230), (10820, 1940561), (15148, 1386115), (18935, 1108892), (37870, 554446), (75740, 277223)]