20415329

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 25436160

約数和(自身を除く): 5020831

約数列:

[1, 11, 19, 23, 31, 137, 209, 253, 341, 437, 589, 713, 1507, 2603, 3151, 4247, 4807, 6479, 7843, 13547, 28633, 34661, 46717, 59869, 80693, 97681, 149017, 658559, 887623, 1074491, 1855939, 20415329]

約数ペア:

[(1, 20415329), (11, 1855939), (19, 1074491), (23, 887623), (31, 658559), (137, 149017), (209, 97681), (253, 80693), (341, 59869), (437, 46717), (589, 34661), (713, 28633), (1507, 13547), (2603, 7843), (3151, 6479), (4247, 4807)]