20068960

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2917}}^1$

素因数の和:2975

約数の個数: 48

約数和(自身を含む): 48532176

約数和(自身を除く): 28463216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2917, 3440, 5834, 6880, 11668, 14585, 23336, 29170, 46672, 58340, 93344, 116680, 125431, 233360, 250862, 466720, 501724, 627155, 1003448, 1254310, 2006896, 2508620, 4013792, 5017240, 10034480, 20068960]

約数ペア:

[(1, 20068960), (2, 10034480), (4, 5017240), (5, 4013792), (8, 2508620), (10, 2006896), (16, 1254310), (20, 1003448), (32, 627155), (40, 501724), (43, 466720), (80, 250862), (86, 233360), (160, 125431), (172, 116680), (215, 93344), (344, 58340), (430, 46672), (688, 29170), (860, 23336), (1376, 14585), (1720, 11668), (2917, 6880), (3440, 5834)]