21247070

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{463}}^1$

素因数の和:836

約数の個数: 32

約数和(自身を含む): 41392512

約数和(自身を除く): 20145442

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 353, 463, 706, 926, 1765, 2315, 3530, 4589, 4630, 6019, 9178, 12038, 22945, 30095, 45890, 60190, 163439, 326878, 817195, 1634390, 2124707, 4249414, 10623535, 21247070]

約数ペア:

[(1, 21247070), (2, 10623535), (5, 4249414), (10, 2124707), (13, 1634390), (26, 817195), (65, 326878), (130, 163439), (353, 60190), (463, 45890), (706, 30095), (926, 22945), (1765, 12038), (2315, 9178), (3530, 6019), (4589, 4630)]