642742457

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 808378560

約数和(自身を除く): 165636103

約数列:

[1, 7, 29, 43, 49, 67, 157, 203, 301, 469, 1099, 1247, 1421, 1943, 2107, 2881, 3283, 4553, 6751, 7693, 8729, 10519, 13601, 20167, 31871, 47257, 61103, 73633, 83549, 95207, 141169, 195779, 223097, 305051, 330799, 452317, 515431, 584843, 1370453, 2135357, 3166219, 4093901, 9593171, 13117193, 14947499, 22163533, 91820351, 642742457]

約数ペア:

[(1, 642742457), (7, 91820351), (29, 22163533), (43, 14947499), (49, 13117193), (67, 9593171), (157, 4093901), (203, 3166219), (301, 2135357), (469, 1370453), (1099, 584843), (1247, 515431), (1421, 452317), (1943, 330799), (2107, 305051), (2881, 223097), (3283, 195779), (4553, 141169), (6751, 95207), (7693, 83549), (8729, 73633), (10519, 61103), (13601, 47257), (20167, 31871)]