20169040

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4133}}^1$

素因数の和:4207

約数の個数: 40

約数和(自身を含む): 47673288

約数和(自身を除く): 27504248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4133, 4880, 8266, 16532, 20665, 33064, 41330, 66128, 82660, 165320, 252113, 330640, 504226, 1008452, 1260565, 2016904, 2521130, 4033808, 5042260, 10084520, 20169040]

約数ペア:

[(1, 20169040), (2, 10084520), (4, 5042260), (5, 4033808), (8, 2521130), (10, 2016904), (16, 1260565), (20, 1008452), (40, 504226), (61, 330640), (80, 252113), (122, 165320), (244, 82660), (305, 66128), (488, 41330), (610, 33064), (976, 20665), (1220, 16532), (2440, 8266), (4133, 4880)]