19963920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{193}}^1\times {\mathrm{431}}^1$

素因数の和:640

約数の個数: 80

約数和(自身を含む): 62353152

約数和(自身を除く): 42389232

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 193, 240, 386, 431, 579, 772, 862, 965, 1158, 1293, 1544, 1724, 1930, 2155, 2316, 2586, 2895, 3088, 3448, 3860, 4310, 4632, 5172, 5790, 6465, 6896, 7720, 8620, 9264, 10344, 11580, 12930, 15440, 17240, 20688, 23160, 25860, 34480, 46320, 51720, 83183, 103440, 166366, 249549, 332732, 415915, 499098, 665464, 831830, 998196, 1247745, 1330928, 1663660, 1996392, 2495490, 3327320, 3992784, 4990980, 6654640, 9981960, 19963920]

約数ペア:

[(1, 19963920), (2, 9981960), (3, 6654640), (4, 4990980), (5, 3992784), (6, 3327320), (8, 2495490), (10, 1996392), (12, 1663660), (15, 1330928), (16, 1247745), (20, 998196), (24, 831830), (30, 665464), (40, 499098), (48, 415915), (60, 332732), (80, 249549), (120, 166366), (193, 103440), (240, 83183), (386, 51720), (431, 46320), (579, 34480), (772, 25860), (862, 23160), (965, 20688), (1158, 17240), (1293, 15440), (1544, 12930), (1724, 11580), (1930, 10344), (2155, 9264), (2316, 8620), (2586, 7720), (2895, 6896), (3088, 6465), (3448, 5790), (3860, 5172), (4310, 4632)]