19738960

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1801}}^1$

素因数の和:1951

約数の個数: 40

約数和(自身を含む): 46253736

約数和(自身を除く): 26514776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 1801, 2192, 2740, 3602, 5480, 7204, 9005, 10960, 14408, 18010, 28816, 36020, 72040, 144080, 246737, 493474, 986948, 1233685, 1973896, 2467370, 3947792, 4934740, 9869480, 19738960]

約数ペア:

[(1, 19738960), (2, 9869480), (4, 4934740), (5, 3947792), (8, 2467370), (10, 1973896), (16, 1233685), (20, 986948), (40, 493474), (80, 246737), (137, 144080), (274, 72040), (548, 36020), (685, 28816), (1096, 18010), (1370, 14408), (1801, 10960), (2192, 9005), (2740, 7204), (3602, 5480)]