20344240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2137}}^1$

素因数の和:2174

約数の個数: 80

約数和(自身を含む): 57264192

約数和(自身を除く): 36919952

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2137, 2380, 4274, 4760, 8548, 9520, 10685, 14959, 17096, 21370, 29918, 34192, 36329, 42740, 59836, 72658, 74795, 85480, 119672, 145316, 149590, 170960, 181645, 239344, 254303, 290632, 299180, 363290, 508606, 581264, 598360, 726580, 1017212, 1196720, 1271515, 1453160, 2034424, 2543030, 2906320, 4068848, 5086060, 10172120, 20344240]

約数ペア:

[(1, 20344240), (2, 10172120), (4, 5086060), (5, 4068848), (7, 2906320), (8, 2543030), (10, 2034424), (14, 1453160), (16, 1271515), (17, 1196720), (20, 1017212), (28, 726580), (34, 598360), (35, 581264), (40, 508606), (56, 363290), (68, 299180), (70, 290632), (80, 254303), (85, 239344), (112, 181645), (119, 170960), (136, 149590), (140, 145316), (170, 119672), (238, 85480), (272, 74795), (280, 72658), (340, 59836), (476, 42740), (560, 36329), (595, 34192), (680, 29918), (952, 21370), (1190, 17096), (1360, 14959), (1904, 10685), (2137, 9520), (2380, 8548), (4274, 4760)]