21419750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{7789}}^1$

素因数の和:7817

約数の個数: 32

約数和(自身を含む): 43748640

約数和(自身を除く): 22328890

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 1375, 2750, 7789, 15578, 38945, 77890, 85679, 171358, 194725, 389450, 428395, 856790, 973625, 1947250, 2141975, 4283950, 10709875, 21419750]

約数ペア:

[(1, 21419750), (2, 10709875), (5, 4283950), (10, 2141975), (11, 1947250), (22, 973625), (25, 856790), (50, 428395), (55, 389450), (110, 194725), (125, 171358), (250, 85679), (275, 77890), (550, 38945), (1375, 15578), (2750, 7789)]