87973180

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1\times {\mathrm{331}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 188578656

約数和(自身を除く): 100605476

約数列:

[1, 2, 4, 5, 10, 20, 97, 137, 194, 274, 331, 388, 485, 548, 662, 685, 970, 1324, 1370, 1655, 1940, 2740, 3310, 6620, 13289, 26578, 32107, 45347, 53156, 64214, 66445, 90694, 128428, 132890, 160535, 181388, 226735, 265780, 321070, 453470, 642140, 906940, 4398659, 8797318, 17594636, 21993295, 43986590, 87973180]

約数ペア:

[(1, 87973180), (2, 43986590), (4, 21993295), (5, 17594636), (10, 8797318), (20, 4398659), (97, 906940), (137, 642140), (194, 453470), (274, 321070), (331, 265780), (388, 226735), (485, 181388), (548, 160535), (662, 132890), (685, 128428), (970, 90694), (1324, 66445), (1370, 64214), (1655, 53156), (1940, 45347), (2740, 32107), (3310, 26578), (6620, 13289)]