31721469

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 50068800

約数和(自身を除く): 18347331

約数列:

[1, 3, 13, 19, 37, 39, 57, 89, 111, 169, 247, 267, 481, 507, 703, 741, 1157, 1443, 1691, 2109, 3211, 3293, 3471, 5073, 6253, 9139, 9633, 9879, 15041, 18759, 21983, 27417, 42809, 45123, 62567, 65949, 118807, 128427, 187701, 285779, 356421, 556517, 813371, 857337, 1669551, 2440113, 10573823, 31721469]

約数ペア:

[(1, 31721469), (3, 10573823), (13, 2440113), (19, 1669551), (37, 857337), (39, 813371), (57, 556517), (89, 356421), (111, 285779), (169, 187701), (247, 128427), (267, 118807), (481, 65949), (507, 62567), (703, 45123), (741, 42809), (1157, 27417), (1443, 21983), (1691, 18759), (2109, 15041), (3211, 9879), (3293, 9633), (3471, 9139), (5073, 6253)]