210405

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1$

素因数の和:117

約数の個数: 24

約数和(自身を含む): 368928

約数和(自身を除く): 158523

約数列:

[1, 3, 5, 13, 15, 39, 65, 83, 169, 195, 249, 415, 507, 845, 1079, 1245, 2535, 3237, 5395, 14027, 16185, 42081, 70135, 210405]

約数ペア:

[(1, 210405), (3, 70135), (5, 42081), (13, 16185), (15, 14027), (39, 5395), (65, 3237), (83, 2535), (169, 1245), (195, 1079), (249, 845), (415, 507)]