20189840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22943}}^1$

素因数の和:22967

約数の個数: 40

約数和(自身を含む): 51211008

約数和(自身を除く): 31021168

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22943, 45886, 91772, 114715, 183544, 229430, 252373, 367088, 458860, 504746, 917720, 1009492, 1261865, 1835440, 2018984, 2523730, 4037968, 5047460, 10094920, 20189840]

約数ペア:

[(1, 20189840), (2, 10094920), (4, 5047460), (5, 4037968), (8, 2523730), (10, 2018984), (11, 1835440), (16, 1261865), (20, 1009492), (22, 917720), (40, 504746), (44, 458860), (55, 367088), (80, 252373), (88, 229430), (110, 183544), (176, 114715), (220, 91772), (440, 45886), (880, 22943)]