1978660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 4515840

約数和(自身を除く): 2537180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 127, 164, 190, 205, 254, 380, 410, 508, 635, 779, 820, 1270, 1558, 2413, 2540, 3116, 3895, 4826, 5207, 7790, 9652, 10414, 12065, 15580, 20828, 24130, 26035, 48260, 52070, 98933, 104140, 197866, 395732, 494665, 989330, 1978660]

約数ペア:

[(1, 1978660), (2, 989330), (4, 494665), (5, 395732), (10, 197866), (19, 104140), (20, 98933), (38, 52070), (41, 48260), (76, 26035), (82, 24130), (95, 20828), (127, 15580), (164, 12065), (190, 10414), (205, 9652), (254, 7790), (380, 5207), (410, 4826), (508, 3895), (635, 3116), (779, 2540), (820, 2413), (1270, 1558)]