21436160

素因数分解:

$2^8\times 5^1\times {\mathrm{16747}}^1$

素因数の和:16768

約数の個数: 36

約数和(自身を含む): 51349368

約数和(自身を除く): 29913208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16747, 33494, 66988, 83735, 133976, 167470, 267952, 334940, 535904, 669880, 1071808, 1339760, 2143616, 2679520, 4287232, 5359040, 10718080, 21436160]

約数ペア:

[(1, 21436160), (2, 10718080), (4, 5359040), (5, 4287232), (8, 2679520), (10, 2143616), (16, 1339760), (20, 1071808), (32, 669880), (40, 535904), (64, 334940), (80, 267952), (128, 167470), (160, 133976), (256, 83735), (320, 66988), (640, 33494), (1280, 16747)]