19999080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{761}}^1$

素因数の和:851

約数の個数: 96

約数和(自身を含む): 65973960

約数和(自身を除く): 45974880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 73, 90, 120, 146, 180, 219, 292, 360, 365, 438, 584, 657, 730, 761, 876, 1095, 1314, 1460, 1522, 1752, 2190, 2283, 2628, 2920, 3044, 3285, 3805, 4380, 4566, 5256, 6088, 6570, 6849, 7610, 8760, 9132, 11415, 13140, 13698, 15220, 18264, 22830, 26280, 27396, 30440, 34245, 45660, 54792, 55553, 68490, 91320, 111106, 136980, 166659, 222212, 273960, 277765, 333318, 444424, 499977, 555530, 666636, 833295, 999954, 1111060, 1333272, 1666590, 1999908, 2222120, 2499885, 3333180, 3999816, 4999770, 6666360, 9999540, 19999080]

約数ペア:

[(1, 19999080), (2, 9999540), (3, 6666360), (4, 4999770), (5, 3999816), (6, 3333180), (8, 2499885), (9, 2222120), (10, 1999908), (12, 1666590), (15, 1333272), (18, 1111060), (20, 999954), (24, 833295), (30, 666636), (36, 555530), (40, 499977), (45, 444424), (60, 333318), (72, 277765), (73, 273960), (90, 222212), (120, 166659), (146, 136980), (180, 111106), (219, 91320), (292, 68490), (360, 55553), (365, 54792), (438, 45660), (584, 34245), (657, 30440), (730, 27396), (761, 26280), (876, 22830), (1095, 18264), (1314, 15220), (1460, 13698), (1522, 13140), (1752, 11415), (2190, 9132), (2283, 8760), (2628, 7610), (2920, 6849), (3044, 6570), (3285, 6088), (3805, 5256), (4380, 4566)]