28285280

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10399}}^1$

素因数の和:10431

約数の個数: 48

約数和(自身を含む): 70761600

約数和(自身を除く): 42476320

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 10399, 20798, 41596, 51995, 83192, 103990, 166384, 176783, 207980, 332768, 353566, 415960, 707132, 831920, 883915, 1414264, 1663840, 1767830, 2828528, 3535660, 5657056, 7071320, 14142640, 28285280]

約数ペア:

[(1, 28285280), (2, 14142640), (4, 7071320), (5, 5657056), (8, 3535660), (10, 2828528), (16, 1767830), (17, 1663840), (20, 1414264), (32, 883915), (34, 831920), (40, 707132), (68, 415960), (80, 353566), (85, 332768), (136, 207980), (160, 176783), (170, 166384), (272, 103990), (340, 83192), (544, 51995), (680, 41596), (1360, 20798), (2720, 10399)]