21000786604

素因数分解:

$2^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{4777249}}^1$

素因数の和:4777417

約数の個数: 24

約数和(自身を含む): 42269108000

約数和(自身を除く): 21268321396

約数列:

[1, 2, 4, 7, 14, 28, 157, 314, 628, 1099, 2198, 4396, 4777249, 9554498, 19108996, 33440743, 66881486, 133762972, 750028093, 1500056186, 3000112372, 5250196651, 10500393302, 21000786604]

約数ペア:

[(1, 21000786604), (2, 10500393302), (4, 5250196651), (7, 3000112372), (14, 1500056186), (28, 750028093), (157, 133762972), (314, 66881486), (628, 33440743), (1099, 19108996), (2198, 9554498), (4396, 4777249)]