21559520

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1061}}^1$

素因数の和:1203

約数の個数: 48

約数和(自身を含む): 51383808

約数和(自身を除く): 29824288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 1016, 1061, 1270, 2032, 2122, 2540, 4064, 4244, 5080, 5305, 8488, 10160, 10610, 16976, 20320, 21220, 33952, 42440, 84880, 134747, 169760, 269494, 538988, 673735, 1077976, 1347470, 2155952, 2694940, 4311904, 5389880, 10779760, 21559520]

約数ペア:

[(1, 21559520), (2, 10779760), (4, 5389880), (5, 4311904), (8, 2694940), (10, 2155952), (16, 1347470), (20, 1077976), (32, 673735), (40, 538988), (80, 269494), (127, 169760), (160, 134747), (254, 84880), (508, 42440), (635, 33952), (1016, 21220), (1061, 20320), (1270, 16976), (2032, 10610), (2122, 10160), (2540, 8488), (4064, 5305), (4244, 5080)]