18741560

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4639}}^1$

素因数の和:4751

約数の個数: 32

約数和(自身を含む): 42595200

約数和(自身を除く): 23853640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4639, 9278, 18556, 23195, 37112, 46390, 92780, 185560, 468539, 937078, 1874156, 2342695, 3748312, 4685390, 9370780, 18741560]

約数ペア:

[(1, 18741560), (2, 9370780), (4, 4685390), (5, 3748312), (8, 2342695), (10, 1874156), (20, 937078), (40, 468539), (101, 185560), (202, 92780), (404, 46390), (505, 37112), (808, 23195), (1010, 18556), (2020, 9278), (4040, 4639)]