19971590

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1223}}^1$

素因数の和:1324

約数の個数: 32

約数和(自身を含む): 38071296

約数和(自身を除く): 18099706

約数列:

[1, 2, 5, 10, 23, 46, 71, 115, 142, 230, 355, 710, 1223, 1633, 2446, 3266, 6115, 8165, 12230, 16330, 28129, 56258, 86833, 140645, 173666, 281290, 434165, 868330, 1997159, 3994318, 9985795, 19971590]

約数ペア:

[(1, 19971590), (2, 9985795), (5, 3994318), (10, 1997159), (23, 868330), (46, 434165), (71, 281290), (115, 173666), (142, 140645), (230, 86833), (355, 56258), (710, 28129), (1223, 16330), (1633, 12230), (2446, 8165), (3266, 6115)]