19742080

素因数分解:

$2^7\times 5^1\times {\mathrm{109}}^1\times {\mathrm{283}}^1$

素因数の和:411

約数の個数: 64

約数和(自身を含む): 47797200

約数和(自身を除く): 28055120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 218, 283, 320, 436, 545, 566, 640, 872, 1090, 1132, 1415, 1744, 2180, 2264, 2830, 3488, 4360, 4528, 5660, 6976, 8720, 9056, 11320, 13952, 17440, 18112, 22640, 30847, 34880, 36224, 45280, 61694, 69760, 90560, 123388, 154235, 181120, 246776, 308470, 493552, 616940, 987104, 1233880, 1974208, 2467760, 3948416, 4935520, 9871040, 19742080]

約数ペア:

[(1, 19742080), (2, 9871040), (4, 4935520), (5, 3948416), (8, 2467760), (10, 1974208), (16, 1233880), (20, 987104), (32, 616940), (40, 493552), (64, 308470), (80, 246776), (109, 181120), (128, 154235), (160, 123388), (218, 90560), (283, 69760), (320, 61694), (436, 45280), (545, 36224), (566, 34880), (640, 30847), (872, 22640), (1090, 18112), (1132, 17440), (1415, 13952), (1744, 11320), (2180, 9056), (2264, 8720), (2830, 6976), (3488, 5660), (4360, 4528)]