21199256

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{4337}}^1$

素因数の和:4403

約数の個数: 32

約数和(自身を含む): 43727040

約数和(自身を除く): 22527784

約数列:

[1, 2, 4, 8, 13, 26, 47, 52, 94, 104, 188, 376, 611, 1222, 2444, 4337, 4888, 8674, 17348, 34696, 56381, 112762, 203839, 225524, 407678, 451048, 815356, 1630712, 2649907, 5299814, 10599628, 21199256]

約数ペア:

[(1, 21199256), (2, 10599628), (4, 5299814), (8, 2649907), (13, 1630712), (26, 815356), (47, 451048), (52, 407678), (94, 225524), (104, 203839), (188, 112762), (376, 56381), (611, 34696), (1222, 17348), (2444, 8674), (4337, 4888)]