21987331373

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{331}}^1\times {\mathrm{2887}}^1$

素因数の和:3417

約数の個数: 32

約数和(自身を含む): 26693437440

約数和(自身を除く): 4706106067

約数列:

[1, 7, 19, 133, 173, 331, 1211, 2317, 2887, 3287, 6289, 20209, 23009, 44023, 54853, 57263, 383971, 400841, 499451, 955597, 1087997, 3496157, 6689179, 7615979, 9489569, 18156343, 66426983, 127094401, 165318281, 1157227967, 3141047339, 21987331373]

約数ペア:

[(1, 21987331373), (7, 3141047339), (19, 1157227967), (133, 165318281), (173, 127094401), (331, 66426983), (1211, 18156343), (2317, 9489569), (2887, 7615979), (3287, 6689179), (6289, 3496157), (20209, 1087997), (23009, 955597), (44023, 499451), (54853, 400841), (57263, 383971)]