21103920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29311}}^1$

素因数の和:29330

約数の個数: 60

約数和(自身を含む): 70876416

約数和(自身を除く): 49772496

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 29311, 58622, 87933, 117244, 146555, 175866, 234488, 263799, 293110, 351732, 439665, 468976, 527598, 586220, 703464, 879330, 1055196, 1172440, 1318995, 1406928, 1758660, 2110392, 2344880, 2637990, 3517320, 4220784, 5275980, 7034640, 10551960, 21103920]

約数ペア:

[(1, 21103920), (2, 10551960), (3, 7034640), (4, 5275980), (5, 4220784), (6, 3517320), (8, 2637990), (9, 2344880), (10, 2110392), (12, 1758660), (15, 1406928), (16, 1318995), (18, 1172440), (20, 1055196), (24, 879330), (30, 703464), (36, 586220), (40, 527598), (45, 468976), (48, 439665), (60, 351732), (72, 293110), (80, 263799), (90, 234488), (120, 175866), (144, 146555), (180, 117244), (240, 87933), (360, 58622), (720, 29311)]