21151053

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1327}}^1$

素因数の和:1374

約数の個数: 48

約数和(自身を含む): 39776256

約数和(自身を除く): 18625203

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 63, 69, 77, 99, 161, 207, 231, 253, 483, 693, 759, 1327, 1449, 1771, 2277, 3981, 5313, 9289, 11943, 14597, 15939, 27867, 30521, 43791, 83601, 91563, 102179, 131373, 213647, 274689, 306537, 335731, 640941, 919611, 1007193, 1922823, 2350117, 3021579, 7050351, 21151053]

約数ペア:

[(1, 21151053), (3, 7050351), (7, 3021579), (9, 2350117), (11, 1922823), (21, 1007193), (23, 919611), (33, 640941), (63, 335731), (69, 306537), (77, 274689), (99, 213647), (161, 131373), (207, 102179), (231, 91563), (253, 83601), (483, 43791), (693, 30521), (759, 27867), (1327, 15939), (1449, 14597), (1771, 11943), (2277, 9289), (3981, 5313)]