2181975

素因数分解:

$3^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{619}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 3690240

約数和(自身を除く): 1508265

約数列:

[1, 3, 5, 15, 25, 47, 75, 141, 235, 619, 705, 1175, 1857, 3095, 3525, 9285, 15475, 29093, 46425, 87279, 145465, 436395, 727325, 2181975]

約数ペア:

[(1, 2181975), (3, 727325), (5, 436395), (15, 145465), (25, 87279), (47, 46425), (75, 29093), (141, 15475), (235, 9285), (619, 3525), (705, 3095), (1175, 1857)]