21330296

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{647}}^1$

素因数の和:983

約数の個数: 32

約数和(自身を含む): 43273440

約数和(自身を除く): 21943144

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 317, 634, 647, 1268, 1294, 2536, 2588, 4121, 5176, 8242, 8411, 16484, 16822, 32968, 33644, 67288, 205099, 410198, 820396, 1640792, 2666287, 5332574, 10665148, 21330296]

約数ペア:

[(1, 21330296), (2, 10665148), (4, 5332574), (8, 2666287), (13, 1640792), (26, 820396), (52, 410198), (104, 205099), (317, 67288), (634, 33644), (647, 32968), (1268, 16822), (1294, 16484), (2536, 8411), (2588, 8242), (4121, 5176)]