2157740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 5019168

約数和(自身を除く): 2861428

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 193, 215, 260, 386, 430, 559, 772, 860, 965, 1118, 1930, 2236, 2509, 2795, 3860, 5018, 5590, 8299, 10036, 11180, 12545, 16598, 25090, 33196, 41495, 50180, 82990, 107887, 165980, 215774, 431548, 539435, 1078870, 2157740]

約数ペア:

[(1, 2157740), (2, 1078870), (4, 539435), (5, 431548), (10, 215774), (13, 165980), (20, 107887), (26, 82990), (43, 50180), (52, 41495), (65, 33196), (86, 25090), (130, 16598), (172, 12545), (193, 11180), (215, 10036), (260, 8299), (386, 5590), (430, 5018), (559, 3860), (772, 2795), (860, 2509), (965, 2236), (1118, 1930)]