21688356

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{439}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 53222400

約数和(自身を除く): 31534044

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 69, 92, 138, 179, 276, 358, 439, 537, 716, 878, 1074, 1317, 1756, 2148, 2634, 4117, 5268, 8234, 10097, 12351, 16468, 20194, 24702, 30291, 40388, 49404, 60582, 78581, 121164, 157162, 235743, 314324, 471486, 942972, 1807363, 3614726, 5422089, 7229452, 10844178, 21688356]

約数ペア:

[(1, 21688356), (2, 10844178), (3, 7229452), (4, 5422089), (6, 3614726), (12, 1807363), (23, 942972), (46, 471486), (69, 314324), (92, 235743), (138, 157162), (179, 121164), (276, 78581), (358, 60582), (439, 49404), (537, 40388), (716, 30291), (878, 24702), (1074, 20194), (1317, 16468), (1756, 12351), (2148, 10097), (2634, 8234), (4117, 5268)]