1990045258175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2377}}^1\times {\mathrm{151531}}^1$

素因数の和:153948

約数の個数: 48

約数和(自身を含む): 2815000265952

約数和(自身を除く): 824955007777

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 2377, 5525, 11885, 30901, 40409, 59425, 151531, 154505, 202045, 525317, 757655, 772525, 1010225, 1969903, 2576027, 2626585, 3788275, 9849515, 12880135, 13132925, 33488351, 49247575, 64400675, 167441755, 360189187, 837208775, 1800945935, 4682459431, 6123216179, 9004729675, 23412297155, 30616080895, 79601810327, 117061485775, 153080404475, 398009051635, 1990045258175]

約数ペア:

[(1, 1990045258175), (5, 398009051635), (13, 153080404475), (17, 117061485775), (25, 79601810327), (65, 30616080895), (85, 23412297155), (221, 9004729675), (325, 6123216179), (425, 4682459431), (1105, 1800945935), (2377, 837208775), (5525, 360189187), (11885, 167441755), (30901, 64400675), (40409, 49247575), (59425, 33488351), (151531, 13132925), (154505, 12880135), (202045, 9849515), (525317, 3788275), (757655, 2626585), (772525, 2576027), (1010225, 1969903)]