2181972

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 5588352

約数和(自身を除く): 3406380

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 71, 78, 142, 156, 197, 213, 284, 394, 426, 591, 788, 852, 923, 1182, 1846, 2364, 2561, 2769, 3692, 5122, 5538, 7683, 10244, 11076, 13987, 15366, 27974, 30732, 41961, 55948, 83922, 167844, 181831, 363662, 545493, 727324, 1090986, 2181972]

約数ペア:

[(1, 2181972), (2, 1090986), (3, 727324), (4, 545493), (6, 363662), (12, 181831), (13, 167844), (26, 83922), (39, 55948), (52, 41961), (71, 30732), (78, 27974), (142, 15366), (156, 13987), (197, 11076), (213, 10244), (284, 7683), (394, 5538), (426, 5122), (591, 3692), (788, 2769), (852, 2561), (923, 2364), (1182, 1846)]