2119780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 4967424

約数和(自身を除く): 2847644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 263, 310, 403, 526, 620, 806, 1052, 1315, 1612, 2015, 2630, 3419, 4030, 5260, 6838, 8060, 8153, 13676, 16306, 17095, 32612, 34190, 40765, 68380, 81530, 105989, 163060, 211978, 423956, 529945, 1059890, 2119780]

約数ペア:

[(1, 2119780), (2, 1059890), (4, 529945), (5, 423956), (10, 211978), (13, 163060), (20, 105989), (26, 81530), (31, 68380), (52, 40765), (62, 34190), (65, 32612), (124, 17095), (130, 16306), (155, 13676), (260, 8153), (263, 8060), (310, 6838), (403, 5260), (526, 4030), (620, 3419), (806, 2630), (1052, 2015), (1315, 1612)]