3937731

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 6451200

約数和(自身を除く): 2513469

約数列:

[1, 3, 7, 19, 21, 57, 71, 133, 139, 213, 399, 417, 497, 973, 1349, 1491, 2641, 2919, 4047, 7923, 9443, 9869, 18487, 28329, 29607, 55461, 69083, 187511, 207249, 562533, 1312577, 3937731]

約数ペア:

[(1, 3937731), (3, 1312577), (7, 562533), (19, 207249), (21, 187511), (57, 69083), (71, 55461), (133, 29607), (139, 28329), (213, 18487), (399, 9869), (417, 9443), (497, 7923), (973, 4047), (1349, 2919), (1491, 2641)]