21175371

素因数分解:

$3^3\times 7^1\times {\mathrm{181}}^1\times {\mathrm{619}}^1$

素因数の和:816

約数の個数: 32

約数和(自身を含む): 36108800

約数和(自身を除く): 14933429

約数列:

[1, 3, 7, 9, 21, 27, 63, 181, 189, 543, 619, 1267, 1629, 1857, 3801, 4333, 4887, 5571, 11403, 12999, 16713, 34209, 38997, 112039, 116991, 336117, 784273, 1008351, 2352819, 3025053, 7058457, 21175371]

約数ペア:

[(1, 21175371), (3, 7058457), (7, 3025053), (9, 2352819), (21, 1008351), (27, 784273), (63, 336117), (181, 116991), (189, 112039), (543, 38997), (619, 34209), (1267, 16713), (1629, 12999), (1857, 11403), (3801, 5571), (4333, 4887)]