20474787

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{1607}}^1$

素因数の和:1778

約数の個数: 16

約数和(自身を含む): 28403712

約数和(自身を除く): 7928925

約数列:

[1, 3, 31, 93, 137, 411, 1607, 4247, 4821, 12741, 49817, 149451, 220159, 660477, 6824929, 20474787]

約数ペア:

[(1, 20474787), (3, 6824929), (31, 660477), (93, 220159), (137, 149451), (411, 49817), (1607, 12741), (4247, 4821)]