20738565

素因数分解:

$3^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1031}}^1$

素因数の和:1194

約数の個数: 32

約数和(自身を含む): 37152000

約数和(自身を除く): 16413435

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 149, 447, 745, 1031, 1341, 2235, 3093, 4023, 5155, 6705, 9279, 15465, 20115, 27837, 46395, 139185, 153619, 460857, 768095, 1382571, 2304285, 4147713, 6912855, 20738565]

約数ペア:

[(1, 20738565), (3, 6912855), (5, 4147713), (9, 2304285), (15, 1382571), (27, 768095), (45, 460857), (135, 153619), (149, 139185), (447, 46395), (745, 27837), (1031, 20115), (1341, 15465), (2235, 9279), (3093, 6705), (4023, 5155)]