20383984

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:457

約数の個数: 40

約数和(自身を含む): 41247360

約数和(自身を除く): 20863376

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 197, 223, 232, 394, 446, 464, 788, 892, 1576, 1784, 3152, 3568, 5713, 6467, 11426, 12934, 22852, 25868, 43931, 45704, 51736, 87862, 91408, 103472, 175724, 351448, 702896, 1273999, 2547998, 5095996, 10191992, 20383984]

約数ペア:

[(1, 20383984), (2, 10191992), (4, 5095996), (8, 2547998), (16, 1273999), (29, 702896), (58, 351448), (116, 175724), (197, 103472), (223, 91408), (232, 87862), (394, 51736), (446, 45704), (464, 43931), (788, 25868), (892, 22852), (1576, 12934), (1784, 11426), (3152, 6467), (3568, 5713)]