128172040

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{45131}}^1$

素因数の和:45213

約数の個数: 32

約数和(自身を含む): 292455360

約数和(自身を除く): 164283320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 45131, 90262, 180524, 225655, 361048, 451310, 902620, 1805240, 3204301, 6408602, 12817204, 16021505, 25634408, 32043010, 64086020, 128172040]

約数ペア:

[(1, 128172040), (2, 64086020), (4, 32043010), (5, 25634408), (8, 16021505), (10, 12817204), (20, 6408602), (40, 3204301), (71, 1805240), (142, 902620), (284, 451310), (355, 361048), (568, 225655), (710, 180524), (1420, 90262), (2840, 45131)]