8577820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 18748800

約数和(自身を除く): 10170980

約数列:

[1, 2, 4, 5, 10, 20, 61, 79, 89, 122, 158, 178, 244, 305, 316, 356, 395, 445, 610, 790, 890, 1220, 1580, 1780, 4819, 5429, 7031, 9638, 10858, 14062, 19276, 21716, 24095, 27145, 28124, 35155, 48190, 54290, 70310, 96380, 108580, 140620, 428891, 857782, 1715564, 2144455, 4288910, 8577820]

約数ペア:

[(1, 8577820), (2, 4288910), (4, 2144455), (5, 1715564), (10, 857782), (20, 428891), (61, 140620), (79, 108580), (89, 96380), (122, 70310), (158, 54290), (178, 48190), (244, 35155), (305, 28124), (316, 27145), (356, 24095), (395, 21716), (445, 19276), (610, 14062), (790, 10858), (890, 9638), (1220, 7031), (1580, 5429), (1780, 4819)]