20203120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{839}}^1$

素因数の和:902

約数の個数: 80

約数和(自身を含む): 54996480

約数和(自身を除く): 34793360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 80, 86, 112, 140, 172, 215, 280, 301, 344, 430, 560, 602, 688, 839, 860, 1204, 1505, 1678, 1720, 2408, 3010, 3356, 3440, 4195, 4816, 5873, 6020, 6712, 8390, 11746, 12040, 13424, 16780, 23492, 24080, 29365, 33560, 36077, 46984, 58730, 67120, 72154, 93968, 117460, 144308, 180385, 234920, 252539, 288616, 360770, 469840, 505078, 577232, 721540, 1010156, 1262695, 1443080, 2020312, 2525390, 2886160, 4040624, 5050780, 10101560, 20203120]

約数ペア:

[(1, 20203120), (2, 10101560), (4, 5050780), (5, 4040624), (7, 2886160), (8, 2525390), (10, 2020312), (14, 1443080), (16, 1262695), (20, 1010156), (28, 721540), (35, 577232), (40, 505078), (43, 469840), (56, 360770), (70, 288616), (80, 252539), (86, 234920), (112, 180385), (140, 144308), (172, 117460), (215, 93968), (280, 72154), (301, 67120), (344, 58730), (430, 46984), (560, 36077), (602, 33560), (688, 29365), (839, 24080), (860, 23492), (1204, 16780), (1505, 13424), (1678, 12040), (1720, 11746), (2408, 8390), (3010, 6712), (3356, 6020), (3440, 5873), (4195, 4816)]