128879420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{59119}}^1$

素因数の和:59237

約数の個数: 24

約数和(自身を含む): 273134400

約数和(自身を除く): 144254980

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 59119, 118238, 236476, 295595, 591190, 1182380, 6443971, 12887942, 25775884, 32219855, 64439710, 128879420]

約数ペア:

[(1, 128879420), (2, 64439710), (4, 32219855), (5, 25775884), (10, 12887942), (20, 6443971), (109, 1182380), (218, 591190), (436, 295595), (545, 236476), (1090, 118238), (2180, 59119)]