778960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:140

約数の個数: 80

約数和(自身を含む): 2249856

約数和(自身を除く): 1470896

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 107, 112, 130, 140, 182, 208, 214, 260, 280, 364, 428, 455, 520, 535, 560, 728, 749, 856, 910, 1040, 1070, 1391, 1456, 1498, 1712, 1820, 2140, 2782, 2996, 3640, 3745, 4280, 5564, 5992, 6955, 7280, 7490, 8560, 9737, 11128, 11984, 13910, 14980, 19474, 22256, 27820, 29960, 38948, 48685, 55640, 59920, 77896, 97370, 111280, 155792, 194740, 389480, 778960]

約数ペア:

[(1, 778960), (2, 389480), (4, 194740), (5, 155792), (7, 111280), (8, 97370), (10, 77896), (13, 59920), (14, 55640), (16, 48685), (20, 38948), (26, 29960), (28, 27820), (35, 22256), (40, 19474), (52, 14980), (56, 13910), (65, 11984), (70, 11128), (80, 9737), (91, 8560), (104, 7490), (107, 7280), (112, 6955), (130, 5992), (140, 5564), (182, 4280), (208, 3745), (214, 3640), (260, 2996), (280, 2782), (364, 2140), (428, 1820), (455, 1712), (520, 1498), (535, 1456), (560, 1391), (728, 1070), (749, 1040), (856, 910)]