19942980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{379}}^1\times {\mathrm{877}}^1$

素因数の和:1268

約数の個数: 48

約数和(自身を含む): 56051520

約数和(自身を除く): 36108540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 379, 758, 877, 1137, 1516, 1754, 1895, 2274, 2631, 3508, 3790, 4385, 4548, 5262, 5685, 7580, 8770, 10524, 11370, 13155, 17540, 22740, 26310, 52620, 332383, 664766, 997149, 1329532, 1661915, 1994298, 3323830, 3988596, 4985745, 6647660, 9971490, 19942980]

約数ペア:

[(1, 19942980), (2, 9971490), (3, 6647660), (4, 4985745), (5, 3988596), (6, 3323830), (10, 1994298), (12, 1661915), (15, 1329532), (20, 997149), (30, 664766), (60, 332383), (379, 52620), (758, 26310), (877, 22740), (1137, 17540), (1516, 13155), (1754, 11370), (1895, 10524), (2274, 8770), (2631, 7580), (3508, 5685), (3790, 5262), (4385, 4548)]