81377240

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41519}}^1$

素因数の和:41544

約数の個数: 48

約数和(自身を含む): 212997600

約数和(自身を除く): 131620360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 41519, 83038, 166076, 207595, 290633, 332152, 415190, 581266, 830380, 1162532, 1453165, 1660760, 2034431, 2325064, 2906330, 4068862, 5812660, 8137724, 10172155, 11625320, 16275448, 20344310, 40688620, 81377240]

約数ペア:

[(1, 81377240), (2, 40688620), (4, 20344310), (5, 16275448), (7, 11625320), (8, 10172155), (10, 8137724), (14, 5812660), (20, 4068862), (28, 2906330), (35, 2325064), (40, 2034431), (49, 1660760), (56, 1453165), (70, 1162532), (98, 830380), (140, 581266), (196, 415190), (245, 332152), (280, 290633), (392, 207595), (490, 166076), (980, 83038), (1960, 41519)]