21585356

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{863}}^1$

素因数の和:930

約数の個数: 36

約数和(自身を含む): 42057792

約数和(自身を除く): 20472436

約数列:

[1, 2, 4, 13, 26, 37, 52, 74, 148, 169, 338, 481, 676, 863, 962, 1726, 1924, 3452, 6253, 11219, 12506, 22438, 25012, 31931, 44876, 63862, 127724, 145847, 291694, 415103, 583388, 830206, 1660412, 5396339, 10792678, 21585356]

約数ペア:

[(1, 21585356), (2, 10792678), (4, 5396339), (13, 1660412), (26, 830206), (37, 583388), (52, 415103), (74, 291694), (148, 145847), (169, 127724), (338, 63862), (481, 44876), (676, 31931), (863, 25012), (962, 22438), (1726, 12506), (1924, 11219), (3452, 6253)]