218581990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{68521}}^1$

素因数の和:68568

約数の個数: 32

約数和(自身を含む): 444022560

約数和(自身を除く): 225440570

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 110, 145, 290, 319, 638, 1595, 3190, 68521, 137042, 342605, 685210, 753731, 1507462, 1987109, 3768655, 3974218, 7537310, 9935545, 19871090, 21858199, 43716398, 109290995, 218581990]

約数ペア:

[(1, 218581990), (2, 109290995), (5, 43716398), (10, 21858199), (11, 19871090), (22, 9935545), (29, 7537310), (55, 3974218), (58, 3768655), (110, 1987109), (145, 1507462), (290, 753731), (319, 685210), (638, 342605), (1595, 137042), (3190, 68521)]