81196900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{821}}^1$

素因数の和:901

約数の個数: 72

約数和(自身を含む): 188362944

約数和(自身を除く): 107166044

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 43, 46, 50, 86, 92, 100, 115, 172, 215, 230, 430, 460, 575, 821, 860, 989, 1075, 1150, 1642, 1978, 2150, 2300, 3284, 3956, 4105, 4300, 4945, 8210, 9890, 16420, 18883, 19780, 20525, 24725, 35303, 37766, 41050, 49450, 70606, 75532, 82100, 94415, 98900, 141212, 176515, 188830, 353030, 377660, 472075, 706060, 811969, 882575, 944150, 1623938, 1765150, 1888300, 3247876, 3530300, 4059845, 8119690, 16239380, 20299225, 40598450, 81196900]

約数ペア:

[(1, 81196900), (2, 40598450), (4, 20299225), (5, 16239380), (10, 8119690), (20, 4059845), (23, 3530300), (25, 3247876), (43, 1888300), (46, 1765150), (50, 1623938), (86, 944150), (92, 882575), (100, 811969), (115, 706060), (172, 472075), (215, 377660), (230, 353030), (430, 188830), (460, 176515), (575, 141212), (821, 98900), (860, 94415), (989, 82100), (1075, 75532), (1150, 70606), (1642, 49450), (1978, 41050), (2150, 37766), (2300, 35303), (3284, 24725), (3956, 20525), (4105, 19780), (4300, 18883), (4945, 16420), (8210, 9890)]