20643805

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{769}}^1$

素因数の和:853

約数の個数: 32

約数和(自身を含む): 31046400

約数和(自身を除く): 10402595

約数列:

[1, 5, 7, 13, 35, 59, 65, 91, 295, 413, 455, 767, 769, 2065, 3835, 3845, 5369, 5383, 9997, 26845, 26915, 45371, 49985, 69979, 226855, 317597, 349895, 589823, 1587985, 2949115, 4128761, 20643805]

約数ペア:

[(1, 20643805), (5, 4128761), (7, 2949115), (13, 1587985), (35, 589823), (59, 349895), (65, 317597), (91, 226855), (295, 69979), (413, 49985), (455, 45371), (767, 26915), (769, 26845), (2065, 9997), (3835, 5383), (3845, 5369)]