18831890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{661}}^1$

素因数の和:723

約数の個数: 64

約数和(自身を含む): 43469568

約数和(自身を除く): 24637678

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 37, 55, 70, 74, 77, 110, 154, 185, 259, 370, 385, 407, 518, 661, 770, 814, 1295, 1322, 2035, 2590, 2849, 3305, 4070, 4627, 5698, 6610, 7271, 9254, 14245, 14542, 23135, 24457, 28490, 36355, 46270, 48914, 50897, 72710, 101794, 122285, 171199, 244570, 254485, 269027, 342398, 508970, 538054, 855995, 1345135, 1711990, 1883189, 2690270, 3766378, 9415945, 18831890]

約数ペア:

[(1, 18831890), (2, 9415945), (5, 3766378), (7, 2690270), (10, 1883189), (11, 1711990), (14, 1345135), (22, 855995), (35, 538054), (37, 508970), (55, 342398), (70, 269027), (74, 254485), (77, 244570), (110, 171199), (154, 122285), (185, 101794), (259, 72710), (370, 50897), (385, 48914), (407, 46270), (518, 36355), (661, 28490), (770, 24457), (814, 23135), (1295, 14542), (1322, 14245), (2035, 9254), (2590, 7271), (2849, 6610), (3305, 5698), (4070, 4627)]