28621980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8369}}^1$

素因数の和:8403

約数の個数: 72

約数和(自身を含む): 91400400

約数和(自身を除く): 62778420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 8369, 16738, 25107, 33476, 41845, 50214, 75321, 83690, 100428, 125535, 150642, 159011, 167380, 251070, 301284, 318022, 376605, 477033, 502140, 636044, 753210, 795055, 954066, 1431099, 1506420, 1590110, 1908132, 2385165, 2862198, 3180220, 4770330, 5724396, 7155495, 9540660, 14310990, 28621980]

約数ペア:

[(1, 28621980), (2, 14310990), (3, 9540660), (4, 7155495), (5, 5724396), (6, 4770330), (9, 3180220), (10, 2862198), (12, 2385165), (15, 1908132), (18, 1590110), (19, 1506420), (20, 1431099), (30, 954066), (36, 795055), (38, 753210), (45, 636044), (57, 502140), (60, 477033), (76, 376605), (90, 318022), (95, 301284), (114, 251070), (171, 167380), (180, 159011), (190, 150642), (228, 125535), (285, 100428), (342, 83690), (380, 75321), (570, 50214), (684, 41845), (855, 33476), (1140, 25107), (1710, 16738), (3420, 8369)]