20910260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1123}}^1$

素因数の和:1165

約数の個数: 72

約数和(自身を含む): 53817120

約数和(自身を除く): 32906860

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1123, 1330, 1862, 2246, 2660, 3724, 4492, 4655, 5615, 7861, 9310, 11230, 15722, 18620, 21337, 22460, 31444, 39305, 42674, 55027, 78610, 85348, 106685, 110054, 149359, 157220, 213370, 220108, 275135, 298718, 426740, 550270, 597436, 746795, 1045513, 1100540, 1493590, 2091026, 2987180, 4182052, 5227565, 10455130, 20910260]

約数ペア:

[(1, 20910260), (2, 10455130), (4, 5227565), (5, 4182052), (7, 2987180), (10, 2091026), (14, 1493590), (19, 1100540), (20, 1045513), (28, 746795), (35, 597436), (38, 550270), (49, 426740), (70, 298718), (76, 275135), (95, 220108), (98, 213370), (133, 157220), (140, 149359), (190, 110054), (196, 106685), (245, 85348), (266, 78610), (380, 55027), (490, 42674), (532, 39305), (665, 31444), (931, 22460), (980, 21337), (1123, 18620), (1330, 15722), (1862, 11230), (2246, 9310), (2660, 7861), (3724, 5615), (4492, 4655)]