21471805

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{2861}}^1$

素因数の和:2964

約数の個数: 16

約数和(自身を含む): 27475200

約数和(自身を除く): 6003395

約数列:

[1, 5, 19, 79, 95, 395, 1501, 2861, 7505, 14305, 54359, 226019, 271795, 1130095, 4294361, 21471805]

約数ペア:

[(1, 21471805), (5, 4294361), (19, 1130095), (79, 271795), (95, 226019), (395, 54359), (1501, 14305), (2861, 7505)]