21404520

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19819}}^1$

素因数の和:19839

約数の個数: 64

約数和(自身を含む): 71352000

約数和(自身を除く): 49947480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 19819, 39638, 59457, 79276, 99095, 118914, 158552, 178371, 198190, 237828, 297285, 356742, 396380, 475656, 535113, 594570, 713484, 792760, 891855, 1070226, 1189140, 1426968, 1783710, 2140452, 2378280, 2675565, 3567420, 4280904, 5351130, 7134840, 10702260, 21404520]

約数ペア:

[(1, 21404520), (2, 10702260), (3, 7134840), (4, 5351130), (5, 4280904), (6, 3567420), (8, 2675565), (9, 2378280), (10, 2140452), (12, 1783710), (15, 1426968), (18, 1189140), (20, 1070226), (24, 891855), (27, 792760), (30, 713484), (36, 594570), (40, 535113), (45, 475656), (54, 396380), (60, 356742), (72, 297285), (90, 237828), (108, 198190), (120, 178371), (135, 158552), (180, 118914), (216, 99095), (270, 79276), (360, 59457), (540, 39638), (1080, 19819)]