21200742

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 47612448

約数和(自身を除く): 26411706

約数列:

[1, 2, 3, 6, 9, 18, 53, 71, 106, 142, 159, 213, 313, 318, 426, 477, 626, 639, 939, 954, 1278, 1878, 2817, 3763, 5634, 7526, 11289, 16589, 22223, 22578, 33178, 33867, 44446, 49767, 66669, 67734, 99534, 133338, 149301, 200007, 298602, 400014, 1177819, 2355638, 3533457, 7066914, 10600371, 21200742]

約数ペア:

[(1, 21200742), (2, 10600371), (3, 7066914), (6, 3533457), (9, 2355638), (18, 1177819), (53, 400014), (71, 298602), (106, 200007), (142, 149301), (159, 133338), (213, 99534), (313, 67734), (318, 66669), (426, 49767), (477, 44446), (626, 33867), (639, 33178), (939, 22578), (954, 22223), (1278, 16589), (1878, 11289), (2817, 7526), (3763, 5634)]