21611120

素因数分解:

$2^4\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1789}}^1$

素因数の和:1953

約数の個数: 40

約数和(自身を含む): 50606880

約数和(自身を除く): 28995760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 151, 302, 604, 755, 1208, 1510, 1789, 2416, 3020, 3578, 6040, 7156, 8945, 12080, 14312, 17890, 28624, 35780, 71560, 143120, 270139, 540278, 1080556, 1350695, 2161112, 2701390, 4322224, 5402780, 10805560, 21611120]

約数ペア:

[(1, 21611120), (2, 10805560), (4, 5402780), (5, 4322224), (8, 2701390), (10, 2161112), (16, 1350695), (20, 1080556), (40, 540278), (80, 270139), (151, 143120), (302, 71560), (604, 35780), (755, 28624), (1208, 17890), (1510, 14312), (1789, 12080), (2416, 8945), (3020, 7156), (3578, 6040)]