21236384

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:813

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 24486496

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 71, 104, 142, 208, 284, 416, 568, 719, 923, 1136, 1438, 1846, 2272, 2876, 3692, 5752, 7384, 9347, 11504, 14768, 18694, 23008, 29536, 37388, 51049, 74776, 102098, 149552, 204196, 299104, 408392, 663637, 816784, 1327274, 1633568, 2654548, 5309096, 10618192, 21236384]

約数ペア:

[(1, 21236384), (2, 10618192), (4, 5309096), (8, 2654548), (13, 1633568), (16, 1327274), (26, 816784), (32, 663637), (52, 408392), (71, 299104), (104, 204196), (142, 149552), (208, 102098), (284, 74776), (416, 51049), (568, 37388), (719, 29536), (923, 23008), (1136, 18694), (1438, 14768), (1846, 11504), (2272, 9347), (2876, 7384), (3692, 5752)]