28268680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1567}}^1$

素因数の和:1630

約数の個数: 64

約数和(自身を含む): 71124480

約数和(自身を除く): 42855800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1567, 1640, 1804, 2255, 3134, 3608, 4510, 6268, 7835, 9020, 12536, 15670, 17237, 18040, 31340, 34474, 62680, 64247, 68948, 86185, 128494, 137896, 172370, 256988, 321235, 344740, 513976, 642470, 689480, 706717, 1284940, 1413434, 2569880, 2826868, 3533585, 5653736, 7067170, 14134340, 28268680]

約数ペア:

[(1, 28268680), (2, 14134340), (4, 7067170), (5, 5653736), (8, 3533585), (10, 2826868), (11, 2569880), (20, 1413434), (22, 1284940), (40, 706717), (41, 689480), (44, 642470), (55, 513976), (82, 344740), (88, 321235), (110, 256988), (164, 172370), (205, 137896), (220, 128494), (328, 86185), (410, 68948), (440, 64247), (451, 62680), (820, 34474), (902, 31340), (1567, 18040), (1640, 17237), (1804, 15670), (2255, 12536), (3134, 9020), (3608, 7835), (4510, 6268)]