81288328

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 171460800

約数和(自身を除く): 90172472

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 89, 97, 107, 178, 194, 214, 356, 388, 428, 712, 776, 856, 979, 1067, 1177, 1958, 2134, 2354, 3916, 4268, 4708, 7832, 8536, 8633, 9416, 9523, 10379, 17266, 19046, 20758, 34532, 38092, 41516, 69064, 76184, 83032, 94963, 104753, 114169, 189926, 209506, 228338, 379852, 419012, 456676, 759704, 838024, 913352, 923731, 1847462, 3694924, 7389848, 10161041, 20322082, 40644164, 81288328]

約数ペア:

[(1, 81288328), (2, 40644164), (4, 20322082), (8, 10161041), (11, 7389848), (22, 3694924), (44, 1847462), (88, 923731), (89, 913352), (97, 838024), (107, 759704), (178, 456676), (194, 419012), (214, 379852), (356, 228338), (388, 209506), (428, 189926), (712, 114169), (776, 104753), (856, 94963), (979, 83032), (1067, 76184), (1177, 69064), (1958, 41516), (2134, 38092), (2354, 34532), (3916, 20758), (4268, 19046), (4708, 17266), (7832, 10379), (8536, 9523), (8633, 9416)]