781568620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{727}}^1\times {\mathrm{1097}}^1$

素因数の和:1847

約数の個数: 72

約数和(自身を含む): 1913629536

約数和(自身を除く): 1132060916

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 727, 980, 1097, 1454, 2194, 2908, 3635, 4388, 5089, 5485, 7270, 7679, 10178, 10970, 14540, 15358, 20356, 21940, 25445, 30716, 35623, 38395, 50890, 53753, 71246, 76790, 101780, 107506, 142492, 153580, 178115, 215012, 268765, 356230, 537530, 712460, 797519, 1075060, 1595038, 3190076, 3987595, 5582633, 7975190, 11165266, 15950380, 22330532, 27913165, 39078431, 55826330, 78156862, 111652660, 156313724, 195392155, 390784310, 781568620]

約数ペア:

[(1, 781568620), (2, 390784310), (4, 195392155), (5, 156313724), (7, 111652660), (10, 78156862), (14, 55826330), (20, 39078431), (28, 27913165), (35, 22330532), (49, 15950380), (70, 11165266), (98, 7975190), (140, 5582633), (196, 3987595), (245, 3190076), (490, 1595038), (727, 1075060), (980, 797519), (1097, 712460), (1454, 537530), (2194, 356230), (2908, 268765), (3635, 215012), (4388, 178115), (5089, 153580), (5485, 142492), (7270, 107506), (7679, 101780), (10178, 76790), (10970, 71246), (14540, 53753), (15358, 50890), (20356, 38395), (21940, 35623), (25445, 30716)]