21781942

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{6299}}^1$

素因数の和:6340

約数の個数: 32

約数和(自身を含む): 42336000

約数和(自身を除く): 20554058

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 91, 133, 182, 247, 266, 494, 1729, 3458, 6299, 12598, 44093, 81887, 88186, 119681, 163774, 239362, 573209, 837767, 1146418, 1555853, 1675534, 3111706, 10890971, 21781942]

約数ペア:

[(1, 21781942), (2, 10890971), (7, 3111706), (13, 1675534), (14, 1555853), (19, 1146418), (26, 837767), (38, 573209), (91, 239362), (133, 163774), (182, 119681), (247, 88186), (266, 81887), (494, 44093), (1729, 12598), (3458, 6299)]