4445020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2039}}^1$

素因数の和:2157

約数の個数: 24

約数和(自身を含む): 9424800

約数和(自身を除く): 4979780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2039, 2180, 4078, 8156, 10195, 20390, 40780, 222251, 444502, 889004, 1111255, 2222510, 4445020]

約数ペア:

[(1, 4445020), (2, 2222510), (4, 1111255), (5, 889004), (10, 444502), (20, 222251), (109, 40780), (218, 20390), (436, 10195), (545, 8156), (1090, 4078), (2039, 2180)]