21708500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3947}}^1$

素因数の和:3977

約数の個数: 48

約数和(自身を含む): 51734592

約数和(自身を除く): 30026092

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3947, 5500, 7894, 15788, 19735, 39470, 43417, 78940, 86834, 98675, 173668, 197350, 217085, 394700, 434170, 493375, 868340, 986750, 1085425, 1973500, 2170850, 4341700, 5427125, 10854250, 21708500]

約数ペア:

[(1, 21708500), (2, 10854250), (4, 5427125), (5, 4341700), (10, 2170850), (11, 1973500), (20, 1085425), (22, 986750), (25, 868340), (44, 493375), (50, 434170), (55, 394700), (100, 217085), (110, 197350), (125, 173668), (220, 98675), (250, 86834), (275, 78940), (500, 43417), (550, 39470), (1100, 19735), (1375, 15788), (2750, 7894), (3947, 5500)]