2659540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 6159888

約数和(自身を除く): 3500348

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 193, 212, 260, 265, 386, 530, 689, 772, 965, 1060, 1378, 1930, 2509, 2756, 3445, 3860, 5018, 6890, 10036, 10229, 12545, 13780, 20458, 25090, 40916, 50180, 51145, 102290, 132977, 204580, 265954, 531908, 664885, 1329770, 2659540]

約数ペア:

[(1, 2659540), (2, 1329770), (4, 664885), (5, 531908), (10, 265954), (13, 204580), (20, 132977), (26, 102290), (52, 51145), (53, 50180), (65, 40916), (106, 25090), (130, 20458), (193, 13780), (212, 12545), (260, 10229), (265, 10036), (386, 6890), (530, 5018), (689, 3860), (772, 3445), (965, 2756), (1060, 2509), (1378, 1930)]