21157560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{58771}}^1$

素因数の和:58788

約数の個数: 48

約数和(自身を含む): 68763240

約数和(自身を除く): 47605680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 58771, 117542, 176313, 235084, 293855, 352626, 470168, 528939, 587710, 705252, 881565, 1057878, 1175420, 1410504, 1763130, 2115756, 2350840, 2644695, 3526260, 4231512, 5289390, 7052520, 10578780, 21157560]

約数ペア:

[(1, 21157560), (2, 10578780), (3, 7052520), (4, 5289390), (5, 4231512), (6, 3526260), (8, 2644695), (9, 2350840), (10, 2115756), (12, 1763130), (15, 1410504), (18, 1175420), (20, 1057878), (24, 881565), (30, 705252), (36, 587710), (40, 528939), (45, 470168), (60, 352626), (72, 293855), (90, 235084), (120, 176313), (180, 117542), (360, 58771)]