18848380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{257}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 42043680

約数和(自身を除く): 23195300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 193, 257, 380, 386, 514, 772, 965, 1028, 1285, 1930, 2570, 3667, 3860, 4883, 5140, 7334, 9766, 14668, 18335, 19532, 24415, 36670, 48830, 49601, 73340, 97660, 99202, 198404, 248005, 496010, 942419, 992020, 1884838, 3769676, 4712095, 9424190, 18848380]

約数ペア:

[(1, 18848380), (2, 9424190), (4, 4712095), (5, 3769676), (10, 1884838), (19, 992020), (20, 942419), (38, 496010), (76, 248005), (95, 198404), (190, 99202), (193, 97660), (257, 73340), (380, 49601), (386, 48830), (514, 36670), (772, 24415), (965, 19532), (1028, 18335), (1285, 14668), (1930, 9766), (2570, 7334), (3667, 5140), (3860, 4883)]