778812860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{313}}^1\times {\mathrm{2539}}^1$

素因数の和:2875

約数の個数: 72

約数和(自身を含む): 1909358640

約数和(自身を除く): 1130545780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 313, 490, 626, 980, 1252, 1565, 2191, 2539, 3130, 4382, 5078, 6260, 8764, 10156, 10955, 12695, 15337, 17773, 21910, 25390, 30674, 35546, 43820, 50780, 61348, 71092, 76685, 88865, 124411, 153370, 177730, 248822, 306740, 355460, 497644, 622055, 794707, 1244110, 1589414, 2488220, 3178828, 3973535, 5562949, 7947070, 11125898, 15894140, 22251796, 27814745, 38940643, 55629490, 77881286, 111258980, 155762572, 194703215, 389406430, 778812860]

約数ペア:

[(1, 778812860), (2, 389406430), (4, 194703215), (5, 155762572), (7, 111258980), (10, 77881286), (14, 55629490), (20, 38940643), (28, 27814745), (35, 22251796), (49, 15894140), (70, 11125898), (98, 7947070), (140, 5562949), (196, 3973535), (245, 3178828), (313, 2488220), (490, 1589414), (626, 1244110), (980, 794707), (1252, 622055), (1565, 497644), (2191, 355460), (2539, 306740), (3130, 248822), (4382, 177730), (5078, 153370), (6260, 124411), (8764, 88865), (10156, 76685), (10955, 71092), (12695, 61348), (15337, 50780), (17773, 43820), (21910, 35546), (25390, 30674)]