20528880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{3719}}^1$

素因数の和:3758

約数の個数: 80

約数和(自身を含む): 66424320

約数和(自身を除く): 45895440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 184, 230, 240, 276, 345, 368, 460, 552, 690, 920, 1104, 1380, 1840, 2760, 3719, 5520, 7438, 11157, 14876, 18595, 22314, 29752, 37190, 44628, 55785, 59504, 74380, 85537, 89256, 111570, 148760, 171074, 178512, 223140, 256611, 297520, 342148, 427685, 446280, 513222, 684296, 855370, 892560, 1026444, 1283055, 1368592, 1710740, 2052888, 2566110, 3421480, 4105776, 5132220, 6842960, 10264440, 20528880]

約数ペア:

[(1, 20528880), (2, 10264440), (3, 6842960), (4, 5132220), (5, 4105776), (6, 3421480), (8, 2566110), (10, 2052888), (12, 1710740), (15, 1368592), (16, 1283055), (20, 1026444), (23, 892560), (24, 855370), (30, 684296), (40, 513222), (46, 446280), (48, 427685), (60, 342148), (69, 297520), (80, 256611), (92, 223140), (115, 178512), (120, 171074), (138, 148760), (184, 111570), (230, 89256), (240, 85537), (276, 74380), (345, 59504), (368, 55785), (460, 44628), (552, 37190), (690, 29752), (920, 22314), (1104, 18595), (1380, 14876), (1840, 11157), (2760, 7438), (3719, 5520)]