28709080

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2729}}^1$

素因数の和:3003

約数の個数: 32

約数和(自身を含む): 64864800

約数和(自身を除く): 36155720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 2729, 5260, 5458, 10520, 10916, 13645, 21832, 27290, 54580, 109160, 717727, 1435454, 2870908, 3588635, 5741816, 7177270, 14354540, 28709080]

約数ペア:

[(1, 28709080), (2, 14354540), (4, 7177270), (5, 5741816), (8, 3588635), (10, 2870908), (20, 1435454), (40, 717727), (263, 109160), (526, 54580), (1052, 27290), (1315, 21832), (2104, 13645), (2630, 10916), (2729, 10520), (5260, 5458)]