1281825

素因数分解:

$3^5\times 5^2\times {\mathrm{211}}^1$

素因数の和:236

約数の個数: 36

約数和(自身を含む): 2392208

約数和(自身を除く): 1110383

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 211, 225, 243, 405, 633, 675, 1055, 1215, 1899, 2025, 3165, 5275, 5697, 6075, 9495, 15825, 17091, 28485, 47475, 51273, 85455, 142425, 256365, 427275, 1281825]

約数ペア:

[(1, 1281825), (3, 427275), (5, 256365), (9, 142425), (15, 85455), (25, 51273), (27, 47475), (45, 28485), (75, 17091), (81, 15825), (135, 9495), (211, 6075), (225, 5697), (243, 5275), (405, 3165), (633, 2025), (675, 1899), (1055, 1215)]