1284990040

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{331183}}^1$

素因数の和:331291

約数の個数: 32

約数和(自身を含む): 2921042880

約数和(自身を除く): 1636052840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 331183, 662366, 1324732, 1655915, 2649464, 3311830, 6623660, 13247320, 32124751, 64249502, 128499004, 160623755, 256998008, 321247510, 642495020, 1284990040]

約数ペア:

[(1, 1284990040), (2, 642495020), (4, 321247510), (5, 256998008), (8, 160623755), (10, 128499004), (20, 64249502), (40, 32124751), (97, 13247320), (194, 6623660), (388, 3311830), (485, 2649464), (776, 1655915), (970, 1324732), (1940, 662366), (3880, 331183)]