21313565

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{337}}^1$

素因数の和:501

約数の個数: 32

約数和(自身を含む): 31799040

約数和(自身を除く): 10485475

約数列:

[1, 5, 7, 13, 35, 65, 91, 139, 337, 455, 695, 973, 1685, 1807, 2359, 4381, 4865, 9035, 11795, 12649, 21905, 30667, 46843, 63245, 153335, 234215, 327901, 608959, 1639505, 3044795, 4262713, 21313565]

約数ペア:

[(1, 21313565), (5, 4262713), (7, 3044795), (13, 1639505), (35, 608959), (65, 327901), (91, 234215), (139, 153335), (337, 63245), (455, 46843), (695, 30667), (973, 21905), (1685, 12649), (1807, 11795), (2359, 9035), (4381, 4865)]