21294800

素因数分解:

$2^4\times 5^2\times {\mathrm{139}}^1\times {\mathrm{383}}^1$

素因数の和:540

約数の個数: 60

約数和(自身を含む): 51663360

約数和(自身を除く): 30368560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 139, 200, 278, 383, 400, 556, 695, 766, 1112, 1390, 1532, 1915, 2224, 2780, 3064, 3475, 3830, 5560, 6128, 6950, 7660, 9575, 11120, 13900, 15320, 19150, 27800, 30640, 38300, 53237, 55600, 76600, 106474, 153200, 212948, 266185, 425896, 532370, 851792, 1064740, 1330925, 2129480, 2661850, 4258960, 5323700, 10647400, 21294800]

約数ペア:

[(1, 21294800), (2, 10647400), (4, 5323700), (5, 4258960), (8, 2661850), (10, 2129480), (16, 1330925), (20, 1064740), (25, 851792), (40, 532370), (50, 425896), (80, 266185), (100, 212948), (139, 153200), (200, 106474), (278, 76600), (383, 55600), (400, 53237), (556, 38300), (695, 30640), (766, 27800), (1112, 19150), (1390, 15320), (1532, 13900), (1915, 11120), (2224, 9575), (2780, 7660), (3064, 6950), (3475, 6128), (3830, 5560)]