78829880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{677}}^1$

素因数の和:800

約数の個数: 64

約数和(自身を含む): 184524480

約数和(自身を除く): 105694600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 71, 82, 142, 164, 205, 284, 328, 355, 410, 568, 677, 710, 820, 1354, 1420, 1640, 2708, 2840, 2911, 3385, 5416, 5822, 6770, 11644, 13540, 14555, 23288, 27080, 27757, 29110, 48067, 55514, 58220, 96134, 111028, 116440, 138785, 192268, 222056, 240335, 277570, 384536, 480670, 555140, 961340, 1110280, 1922680, 1970747, 3941494, 7882988, 9853735, 15765976, 19707470, 39414940, 78829880]

約数ペア:

[(1, 78829880), (2, 39414940), (4, 19707470), (5, 15765976), (8, 9853735), (10, 7882988), (20, 3941494), (40, 1970747), (41, 1922680), (71, 1110280), (82, 961340), (142, 555140), (164, 480670), (205, 384536), (284, 277570), (328, 240335), (355, 222056), (410, 192268), (568, 138785), (677, 116440), (710, 111028), (820, 96134), (1354, 58220), (1420, 55514), (1640, 48067), (2708, 29110), (2840, 27757), (2911, 27080), (3385, 23288), (5416, 14555), (5822, 13540), (6770, 11644)]