20371216

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{613}}^1$

素因数の和:719

約数の個数: 40

約数和(自身を含む): 41417984

約数和(自身を除く): 21046768

約数列:

[1, 2, 4, 8, 16, 31, 62, 67, 124, 134, 248, 268, 496, 536, 613, 1072, 1226, 2077, 2452, 4154, 4904, 8308, 9808, 16616, 19003, 33232, 38006, 41071, 76012, 82142, 152024, 164284, 304048, 328568, 657136, 1273201, 2546402, 5092804, 10185608, 20371216]

約数ペア:

[(1, 20371216), (2, 10185608), (4, 5092804), (8, 2546402), (16, 1273201), (31, 657136), (62, 328568), (67, 304048), (124, 164284), (134, 152024), (248, 82142), (268, 76012), (496, 41071), (536, 38006), (613, 33232), (1072, 19003), (1226, 16616), (2077, 9808), (2452, 8308), (4154, 4904)]