19781016

素因数分解:

$2^3\times 3^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{293}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 51861600

約数和(自身を除く): 32080584

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 29, 58, 87, 97, 116, 174, 194, 232, 291, 293, 348, 388, 582, 586, 696, 776, 879, 1164, 1172, 1758, 2328, 2344, 2813, 3516, 5626, 7032, 8439, 8497, 11252, 16878, 16994, 22504, 25491, 28421, 33756, 33988, 50982, 56842, 67512, 67976, 85263, 101964, 113684, 170526, 203928, 227368, 341052, 682104, 824209, 1648418, 2472627, 3296836, 4945254, 6593672, 9890508, 19781016]

約数ペア:

[(1, 19781016), (2, 9890508), (3, 6593672), (4, 4945254), (6, 3296836), (8, 2472627), (12, 1648418), (24, 824209), (29, 682104), (58, 341052), (87, 227368), (97, 203928), (116, 170526), (174, 113684), (194, 101964), (232, 85263), (291, 67976), (293, 67512), (348, 56842), (388, 50982), (582, 33988), (586, 33756), (696, 28421), (776, 25491), (879, 22504), (1164, 16994), (1172, 16878), (1758, 11252), (2328, 8497), (2344, 8439), (2813, 7032), (3516, 5626)]