21418768

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^2\times {\mathrm{199}}^1$

素因数の和:276

約数の個数: 60

約数和(自身を含む): 49252800

約数和(自身を除く): 27834032

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 199, 217, 248, 398, 434, 496, 796, 868, 961, 1393, 1592, 1736, 1922, 2786, 3184, 3472, 3844, 5572, 6169, 6727, 7688, 11144, 12338, 13454, 15376, 22288, 24676, 26908, 43183, 49352, 53816, 86366, 98704, 107632, 172732, 191239, 345464, 382478, 690928, 764956, 1338673, 1529912, 2677346, 3059824, 5354692, 10709384, 21418768]

約数ペア:

[(1, 21418768), (2, 10709384), (4, 5354692), (7, 3059824), (8, 2677346), (14, 1529912), (16, 1338673), (28, 764956), (31, 690928), (56, 382478), (62, 345464), (112, 191239), (124, 172732), (199, 107632), (217, 98704), (248, 86366), (398, 53816), (434, 49352), (496, 43183), (796, 26908), (868, 24676), (961, 22288), (1393, 15376), (1592, 13454), (1736, 12338), (1922, 11144), (2786, 7688), (3184, 6727), (3472, 6169), (3844, 5572)]