20996914172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2447}}^1\times {\mathrm{5323}}^1$

素因数の和:7818

約数の個数: 48

約数和(自身を含む): 40871964672

約数和(自身を除く): 19875050500

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 2447, 4894, 5323, 9788, 10646, 21292, 31811, 63622, 69199, 75857, 127244, 138398, 151714, 165013, 276796, 303428, 330026, 660052, 986141, 1972282, 2145169, 3944564, 4290338, 8580676, 13025381, 26050762, 52101524, 169329953, 338659906, 403786811, 677319812, 807573622, 1615147244, 5249228543, 10498457086, 20996914172]

約数ペア:

[(1, 20996914172), (2, 10498457086), (4, 5249228543), (13, 1615147244), (26, 807573622), (31, 677319812), (52, 403786811), (62, 338659906), (124, 169329953), (403, 52101524), (806, 26050762), (1612, 13025381), (2447, 8580676), (4894, 4290338), (5323, 3944564), (9788, 2145169), (10646, 1972282), (21292, 986141), (31811, 660052), (63622, 330026), (69199, 303428), (75857, 276796), (127244, 165013), (138398, 151714)]