20215524640

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1\times {\mathrm{8719}}^1$

素因数の和:9114

約数の個数: 96

約数和(自身を含む): 49020491520

約数和(自身を除く): 28804966880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 337, 344, 430, 674, 688, 860, 1348, 1376, 1685, 1720, 2696, 3370, 3440, 5392, 6740, 6880, 8719, 10784, 13480, 14491, 17438, 26960, 28982, 34876, 43595, 53920, 57964, 69752, 72455, 87190, 115928, 139504, 144910, 174380, 231856, 279008, 289820, 348760, 374917, 463712, 579640, 697520, 749834, 1159280, 1395040, 1499668, 1874585, 2318560, 2938303, 2999336, 3749170, 5876606, 5998672, 7498340, 11753212, 11997344, 14691515, 14996680, 23506424, 29383030, 29993360, 47012848, 58766060, 59986720, 94025696, 117532120, 126347029, 235064240, 252694058, 470128480, 505388116, 631735145, 1010776232, 1263470290, 2021552464, 2526940580, 4043104928, 5053881160, 10107762320, 20215524640]

約数ペア:

[(1, 20215524640), (2, 10107762320), (4, 5053881160), (5, 4043104928), (8, 2526940580), (10, 2021552464), (16, 1263470290), (20, 1010776232), (32, 631735145), (40, 505388116), (43, 470128480), (80, 252694058), (86, 235064240), (160, 126347029), (172, 117532120), (215, 94025696), (337, 59986720), (344, 58766060), (430, 47012848), (674, 29993360), (688, 29383030), (860, 23506424), (1348, 14996680), (1376, 14691515), (1685, 11997344), (1720, 11753212), (2696, 7498340), (3370, 5998672), (3440, 5876606), (5392, 3749170), (6740, 2999336), (6880, 2938303), (8719, 2318560), (10784, 1874585), (13480, 1499668), (14491, 1395040), (17438, 1159280), (26960, 749834), (28982, 697520), (34876, 579640), (43595, 463712), (53920, 374917), (57964, 348760), (69752, 289820), (72455, 279008), (87190, 231856), (115928, 174380), (139504, 144910)]