21751844

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{191}}^1\times {\mathrm{401}}^1$

素因数の和:667

約数の個数: 24

約数和(自身を含む): 38900736

約数和(自身を除く): 17148892

約数列:

[1, 2, 4, 71, 142, 191, 284, 382, 401, 764, 802, 1604, 13561, 27122, 28471, 54244, 56942, 76591, 113884, 153182, 306364, 5437961, 10875922, 21751844]

約数ペア:

[(1, 21751844), (2, 10875922), (4, 5437961), (71, 306364), (142, 153182), (191, 113884), (284, 76591), (382, 56942), (401, 54244), (764, 28471), (802, 27122), (1604, 13561)]