20473905

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{257}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 33882624

約数和(自身を除く): 13408719

約数列:

[1, 3, 5, 15, 47, 113, 141, 235, 257, 339, 565, 705, 771, 1285, 1695, 3855, 5311, 12079, 15933, 26555, 29041, 36237, 60395, 79665, 87123, 145205, 181185, 435615, 1364927, 4094781, 6824635, 20473905]

約数ペア:

[(1, 20473905), (3, 6824635), (5, 4094781), (15, 1364927), (47, 435615), (113, 181185), (141, 145205), (235, 87123), (257, 79665), (339, 60395), (565, 36237), (705, 29041), (771, 26555), (1285, 15933), (1695, 12079), (3855, 5311)]