21287538

素因数分解:

$2^1\times 3^2\times {\mathrm{967}}^1\times {\mathrm{1223}}^1$

素因数の和:2198

約数の個数: 24

約数和(自身を含む): 46208448

約数和(自身を除く): 24920910

約数列:

[1, 2, 3, 6, 9, 18, 967, 1223, 1934, 2446, 2901, 3669, 5802, 7338, 8703, 11007, 17406, 22014, 1182641, 2365282, 3547923, 7095846, 10643769, 21287538]

約数ペア:

[(1, 21287538), (2, 10643769), (3, 7095846), (6, 3547923), (9, 2365282), (18, 1182641), (967, 22014), (1223, 17406), (1934, 11007), (2446, 8703), (2901, 7338), (3669, 5802)]