287930920

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{74209}}^1$

素因数の和:74317

約数の個数: 32

約数和(自身を含む): 654532200

約数和(自身を除く): 366601280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 74209, 148418, 296836, 371045, 593672, 742090, 1484180, 2968360, 7198273, 14396546, 28793092, 35991365, 57586184, 71982730, 143965460, 287930920]

約数ペア:

[(1, 287930920), (2, 143965460), (4, 71982730), (5, 57586184), (8, 35991365), (10, 28793092), (20, 14396546), (40, 7198273), (97, 2968360), (194, 1484180), (388, 742090), (485, 593672), (776, 371045), (970, 296836), (1940, 148418), (3880, 74209)]