28038205

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{311}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 38787840

約数和(自身を除く): 10749635

約数列:

[1, 5, 13, 19, 65, 73, 95, 247, 311, 365, 949, 1235, 1387, 1555, 4043, 4745, 5909, 6935, 18031, 20215, 22703, 29545, 76817, 90155, 113515, 295139, 384085, 431357, 1475695, 2156785, 5607641, 28038205]

約数ペア:

[(1, 28038205), (5, 5607641), (13, 2156785), (19, 1475695), (65, 431357), (73, 384085), (95, 295139), (247, 113515), (311, 90155), (365, 76817), (949, 29545), (1235, 22703), (1387, 20215), (1555, 18031), (4043, 6935), (4745, 5909)]