21067839

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7829}}^1$

素因数の和:7871

約数の個数: 24

約数和(自身を含む): 34201440

約数和(自身を除く): 13133601

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 7829, 23487, 70461, 101777, 180067, 305331, 540201, 915993, 1620603, 2340871, 7022613, 21067839]

約数ペア:

[(1, 21067839), (3, 7022613), (9, 2340871), (13, 1620603), (23, 915993), (39, 540201), (69, 305331), (117, 180067), (207, 101777), (299, 70461), (897, 23487), (2691, 7829)]