2019236840

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{638999}}^1$

素因数の和:639089

約数の個数: 32

約数和(自身を含む): 4600800000

約数和(自身を除く): 2581563160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 638999, 1277998, 2555996, 3194995, 5111992, 6389990, 12779980, 25559960, 50480921, 100961842, 201923684, 252404605, 403847368, 504809210, 1009618420, 2019236840]

約数ペア:

[(1, 2019236840), (2, 1009618420), (4, 504809210), (5, 403847368), (8, 252404605), (10, 201923684), (20, 100961842), (40, 50480921), (79, 25559960), (158, 12779980), (316, 6389990), (395, 5111992), (632, 3194995), (790, 2555996), (1580, 1277998), (3160, 638999)]