398846973

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{6221}}^1$

素因数の和:6345

約数の個数: 32

約数和(自身を含む): 630761472

約数和(自身を除く): 231914499

約数列:

[1, 3, 7, 21, 43, 71, 129, 213, 301, 497, 903, 1491, 3053, 6221, 9159, 18663, 21371, 43547, 64113, 130641, 267503, 441691, 802509, 1325073, 1872521, 3091837, 5617563, 9275511, 18992713, 56978139, 132948991, 398846973]

約数ペア:

[(1, 398846973), (3, 132948991), (7, 56978139), (21, 18992713), (43, 9275511), (71, 5617563), (129, 3091837), (213, 1872521), (301, 1325073), (497, 802509), (903, 441691), (1491, 267503), (3053, 130641), (6221, 64113), (9159, 43547), (18663, 21371)]