21663856

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{433}}^1$

素因数の和:553

約数の個数: 40

約数和(自身を含む): 43590960

約数和(自身を除く): 21927104

約数列:

[1, 2, 4, 8, 16, 53, 59, 106, 118, 212, 236, 424, 433, 472, 848, 866, 944, 1732, 3127, 3464, 6254, 6928, 12508, 22949, 25016, 25547, 45898, 50032, 51094, 91796, 102188, 183592, 204376, 367184, 408752, 1353991, 2707982, 5415964, 10831928, 21663856]

約数ペア:

[(1, 21663856), (2, 10831928), (4, 5415964), (8, 2707982), (16, 1353991), (53, 408752), (59, 367184), (106, 204376), (118, 183592), (212, 102188), (236, 91796), (424, 51094), (433, 50032), (472, 45898), (848, 25547), (866, 25016), (944, 22949), (1732, 12508), (3127, 6928), (3464, 6254)]