20171880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{409}}^1$

素因数の和:563

約数の個数: 96

約数和(自身を含む): 66198600

約数和(自身を除く): 46026720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 137, 180, 274, 360, 409, 411, 548, 685, 818, 822, 1096, 1227, 1233, 1370, 1636, 1644, 2045, 2055, 2454, 2466, 2740, 3272, 3288, 3681, 4090, 4110, 4908, 4932, 5480, 6135, 6165, 7362, 8180, 8220, 9816, 9864, 12270, 12330, 14724, 16360, 16440, 18405, 24540, 24660, 29448, 36810, 49080, 49320, 56033, 73620, 112066, 147240, 168099, 224132, 280165, 336198, 448264, 504297, 560330, 672396, 840495, 1008594, 1120660, 1344792, 1680990, 2017188, 2241320, 2521485, 3361980, 4034376, 5042970, 6723960, 10085940, 20171880]

約数ペア:

[(1, 20171880), (2, 10085940), (3, 6723960), (4, 5042970), (5, 4034376), (6, 3361980), (8, 2521485), (9, 2241320), (10, 2017188), (12, 1680990), (15, 1344792), (18, 1120660), (20, 1008594), (24, 840495), (30, 672396), (36, 560330), (40, 504297), (45, 448264), (60, 336198), (72, 280165), (90, 224132), (120, 168099), (137, 147240), (180, 112066), (274, 73620), (360, 56033), (409, 49320), (411, 49080), (548, 36810), (685, 29448), (818, 24660), (822, 24540), (1096, 18405), (1227, 16440), (1233, 16360), (1370, 14724), (1636, 12330), (1644, 12270), (2045, 9864), (2055, 9816), (2454, 8220), (2466, 8180), (2740, 7362), (3272, 6165), (3288, 6135), (3681, 5480), (4090, 4932), (4110, 4908)]