20657475

素因数分解:

$3^2\times 5^2\times {\mathrm{91811}}^1$

素因数の和:91827

約数の個数: 18

約数和(自身を含む): 37000236

約数和(自身を除く): 16342761

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 91811, 275433, 459055, 826299, 1377165, 2295275, 4131495, 6885825, 20657475]

約数ペア:

[(1, 20657475), (3, 6885825), (5, 4131495), (9, 2295275), (15, 1377165), (25, 826299), (45, 459055), (75, 275433), (225, 91811)]