28105160

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{10487}}^1$

素因数の和:10565

約数の個数: 32

約数和(自身を含む): 64186560

約数和(自身を除く): 36081400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 10487, 20974, 41948, 52435, 83896, 104870, 209740, 419480, 702629, 1405258, 2810516, 3513145, 5621032, 7026290, 14052580, 28105160]

約数ペア:

[(1, 28105160), (2, 14052580), (4, 7026290), (5, 5621032), (8, 3513145), (10, 2810516), (20, 1405258), (40, 702629), (67, 419480), (134, 209740), (268, 104870), (335, 83896), (536, 52435), (670, 41948), (1340, 20974), (2680, 10487)]