21967000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{1997}}^1$

素因数の和:2029

約数の個数: 64

約数和(自身を含む): 56103840

約数和(自身を除く): 34136840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 200, 220, 250, 275, 440, 500, 550, 1000, 1100, 1375, 1997, 2200, 2750, 3994, 5500, 7988, 9985, 11000, 15976, 19970, 21967, 39940, 43934, 49925, 79880, 87868, 99850, 109835, 175736, 199700, 219670, 249625, 399400, 439340, 499250, 549175, 878680, 998500, 1098350, 1997000, 2196700, 2745875, 4393400, 5491750, 10983500, 21967000]

約数ペア:

[(1, 21967000), (2, 10983500), (4, 5491750), (5, 4393400), (8, 2745875), (10, 2196700), (11, 1997000), (20, 1098350), (22, 998500), (25, 878680), (40, 549175), (44, 499250), (50, 439340), (55, 399400), (88, 249625), (100, 219670), (110, 199700), (125, 175736), (200, 109835), (220, 99850), (250, 87868), (275, 79880), (440, 49925), (500, 43934), (550, 39940), (1000, 21967), (1100, 19970), (1375, 15976), (1997, 11000), (2200, 9985), (2750, 7988), (3994, 5500)]