389480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:138

約数の個数: 64

約数和(自身を含む): 1088640

約数和(自身を除く): 699160

約数列:

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

約数ペア:

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