649678660

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1\times {\mathrm{1867}}^1$

素因数の和:2140

約数の個数: 48

約数和(自身を含む): 1385846784

約数和(自身を除く): 736168124

約数列:

[1, 2, 4, 5, 10, 20, 127, 137, 254, 274, 508, 548, 635, 685, 1270, 1370, 1867, 2540, 2740, 3734, 7468, 9335, 17399, 18670, 34798, 37340, 69596, 86995, 173990, 237109, 255779, 347980, 474218, 511558, 948436, 1023116, 1185545, 1278895, 2371090, 2557790, 4742180, 5115580, 32483933, 64967866, 129935732, 162419665, 324839330, 649678660]

約数ペア:

[(1, 649678660), (2, 324839330), (4, 162419665), (5, 129935732), (10, 64967866), (20, 32483933), (127, 5115580), (137, 4742180), (254, 2557790), (274, 2371090), (508, 1278895), (548, 1185545), (635, 1023116), (685, 948436), (1270, 511558), (1370, 474218), (1867, 347980), (2540, 255779), (2740, 237109), (3734, 173990), (7468, 86995), (9335, 69596), (17399, 37340), (18670, 34798)]