21388560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89119}}^1$

素因数の和:89135

約数の個数: 40

約数和(自身を含む): 66305280

約数和(自身を除く): 44916720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 89119, 178238, 267357, 356476, 445595, 534714, 712952, 891190, 1069428, 1336785, 1425904, 1782380, 2138856, 2673570, 3564760, 4277712, 5347140, 7129520, 10694280, 21388560]

約数ペア:

[(1, 21388560), (2, 10694280), (3, 7129520), (4, 5347140), (5, 4277712), (6, 3564760), (8, 2673570), (10, 2138856), (12, 1782380), (15, 1425904), (16, 1336785), (20, 1069428), (24, 891190), (30, 712952), (40, 534714), (48, 445595), (60, 356476), (80, 267357), (120, 178238), (240, 89119)]