21007250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{7639}}^1$

素因数の和:7667

約数の個数: 32

約数和(自身を含む): 42906240

約数和(自身を除く): 21898990

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 1375, 2750, 7639, 15278, 38195, 76390, 84029, 168058, 190975, 381950, 420145, 840290, 954875, 1909750, 2100725, 4201450, 10503625, 21007250]

約数ペア:

[(1, 21007250), (2, 10503625), (5, 4201450), (10, 2100725), (11, 1909750), (22, 954875), (25, 840290), (50, 420145), (55, 381950), (110, 190975), (125, 168058), (250, 84029), (275, 76390), (550, 38195), (1375, 15278), (2750, 7639)]