21785324

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:171

約数の個数: 72

約数和(自身を含む): 46475520

約数和(自身を除く): 24690196

約数列:

[1, 2, 4, 11, 19, 22, 23, 38, 44, 46, 76, 92, 103, 121, 206, 209, 242, 253, 412, 418, 437, 484, 506, 836, 874, 1012, 1133, 1748, 1957, 2266, 2299, 2369, 2783, 3914, 4532, 4598, 4738, 4807, 5566, 7828, 9196, 9476, 9614, 11132, 12463, 19228, 21527, 24926, 26059, 43054, 45011, 49852, 52118, 52877, 86108, 90022, 104236, 105754, 180044, 211508, 236797, 286649, 473594, 495121, 573298, 947188, 990242, 1146596, 1980484, 5446331, 10892662, 21785324]

約数ペア:

[(1, 21785324), (2, 10892662), (4, 5446331), (11, 1980484), (19, 1146596), (22, 990242), (23, 947188), (38, 573298), (44, 495121), (46, 473594), (76, 286649), (92, 236797), (103, 211508), (121, 180044), (206, 105754), (209, 104236), (242, 90022), (253, 86108), (412, 52877), (418, 52118), (437, 49852), (484, 45011), (506, 43054), (836, 26059), (874, 24926), (1012, 21527), (1133, 19228), (1748, 12463), (1957, 11132), (2266, 9614), (2299, 9476), (2369, 9196), (2783, 7828), (3914, 5566), (4532, 4807), (4598, 4738)]