21765136

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:439

約数の個数: 40

約数和(自身を含む): 43640064

約数和(自身を除く): 21874928

約数列:

[1, 2, 4, 8, 16, 47, 94, 103, 188, 206, 281, 376, 412, 562, 752, 824, 1124, 1648, 2248, 4496, 4841, 9682, 13207, 19364, 26414, 28943, 38728, 52828, 57886, 77456, 105656, 115772, 211312, 231544, 463088, 1360321, 2720642, 5441284, 10882568, 21765136]

約数ペア:

[(1, 21765136), (2, 10882568), (4, 5441284), (8, 2720642), (16, 1360321), (47, 463088), (94, 231544), (103, 211312), (188, 115772), (206, 105656), (281, 77456), (376, 57886), (412, 52828), (562, 38728), (752, 28943), (824, 26414), (1124, 19364), (1648, 13207), (2248, 9682), (4496, 4841)]