21489291278

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{769}}^1\times {\mathrm{2897}}^1$

素因数の和:3741

約数の個数: 64

約数和(自身を含む): 40487610240

約数和(自身を除く): 18998318962

約数列:

[1, 2, 7, 13, 14, 26, 53, 91, 106, 182, 371, 689, 742, 769, 1378, 1538, 2897, 4823, 5383, 5794, 9646, 9997, 10766, 19994, 20279, 37661, 40558, 40757, 69979, 75322, 81514, 139958, 153541, 263627, 285299, 307082, 527254, 529841, 570598, 1059682, 1074787, 1996033, 2149574, 2227793, 3708887, 3992066, 4455586, 7417774, 13972231, 15594551, 27944462, 28961309, 31189102, 57922618, 118073029, 202729163, 236146058, 405458326, 826511203, 1534949377, 1653022406, 3069898754, 10744645639, 21489291278]

約数ペア:

[(1, 21489291278), (2, 10744645639), (7, 3069898754), (13, 1653022406), (14, 1534949377), (26, 826511203), (53, 405458326), (91, 236146058), (106, 202729163), (182, 118073029), (371, 57922618), (689, 31189102), (742, 28961309), (769, 27944462), (1378, 15594551), (1538, 13972231), (2897, 7417774), (4823, 4455586), (5383, 3992066), (5794, 3708887), (9646, 2227793), (9997, 2149574), (10766, 1996033), (19994, 1074787), (20279, 1059682), (37661, 570598), (40558, 529841), (40757, 527254), (69979, 307082), (75322, 285299), (81514, 263627), (139958, 153541)]