12947720

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3637}}^1$

素因数の和:3737

約数の個数: 32

約数和(自身を含む): 29467800

約数和(自身を除く): 16520080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 3637, 7274, 14548, 18185, 29096, 36370, 72740, 145480, 323693, 647386, 1294772, 1618465, 2589544, 3236930, 6473860, 12947720]

約数ペア:

[(1, 12947720), (2, 6473860), (4, 3236930), (5, 2589544), (8, 1618465), (10, 1294772), (20, 647386), (40, 323693), (89, 145480), (178, 72740), (356, 36370), (445, 29096), (712, 18185), (890, 14548), (1780, 7274), (3560, 3637)]