20867770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{661}}^1$

素因数の和:727

約数の個数: 64

約数和(自身を含む): 48045312

約数和(自身を除く): 27177542

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 41, 55, 70, 77, 82, 110, 154, 205, 287, 385, 410, 451, 574, 661, 770, 902, 1322, 1435, 2255, 2870, 3157, 3305, 4510, 4627, 6314, 6610, 7271, 9254, 14542, 15785, 23135, 27101, 31570, 36355, 46270, 50897, 54202, 72710, 101794, 135505, 189707, 254485, 271010, 298111, 379414, 508970, 596222, 948535, 1490555, 1897070, 2086777, 2981110, 4173554, 10433885, 20867770]

約数ペア:

[(1, 20867770), (2, 10433885), (5, 4173554), (7, 2981110), (10, 2086777), (11, 1897070), (14, 1490555), (22, 948535), (35, 596222), (41, 508970), (55, 379414), (70, 298111), (77, 271010), (82, 254485), (110, 189707), (154, 135505), (205, 101794), (287, 72710), (385, 54202), (410, 50897), (451, 46270), (574, 36355), (661, 31570), (770, 27101), (902, 23135), (1322, 15785), (1435, 14542), (2255, 9254), (2870, 7271), (3157, 6610), (3305, 6314), (4510, 4627)]