21398776

素因数分解:

$2^3\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1811}}^1$

素因数の和:2035

約数の個数: 32

約数和(自身を含む): 46097280

約数和(自身を除く): 24698504

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 211, 422, 844, 1477, 1688, 1811, 2954, 3622, 5908, 7244, 11816, 12677, 14488, 25354, 50708, 101416, 382121, 764242, 1528484, 2674847, 3056968, 5349694, 10699388, 21398776]

約数ペア:

[(1, 21398776), (2, 10699388), (4, 5349694), (7, 3056968), (8, 2674847), (14, 1528484), (28, 764242), (56, 382121), (211, 101416), (422, 50708), (844, 25354), (1477, 14488), (1688, 12677), (1811, 11816), (2954, 7244), (3622, 5908)]