81947649

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{409}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 134611200

約数和(自身を除く): 52663551

約数列:

[1, 3, 7, 21, 29, 47, 49, 87, 141, 147, 203, 329, 409, 609, 987, 1227, 1363, 1421, 2303, 2863, 4089, 4263, 6909, 8589, 9541, 11861, 19223, 20041, 28623, 35583, 57669, 60123, 66787, 83027, 134561, 200361, 249081, 403683, 557467, 581189, 941927, 1672401, 1743567, 2825781, 3902269, 11706807, 27315883, 81947649]

約数ペア:

[(1, 81947649), (3, 27315883), (7, 11706807), (21, 3902269), (29, 2825781), (47, 1743567), (49, 1672401), (87, 941927), (141, 581189), (147, 557467), (203, 403683), (329, 249081), (409, 200361), (609, 134561), (987, 83027), (1227, 66787), (1363, 60123), (1421, 57669), (2303, 35583), (2863, 28623), (4089, 20041), (4263, 19223), (6909, 11861), (8589, 9541)]