25525227

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1$

素因数の和:105

約数の個数: 72

約数和(自身を含む): 46213776

約数和(自身を除く): 20688549

約数列:

[1, 3, 7, 13, 19, 21, 37, 39, 49, 57, 91, 111, 133, 147, 247, 259, 273, 361, 399, 481, 637, 703, 741, 777, 931, 1083, 1443, 1729, 1813, 1911, 2109, 2527, 2793, 3367, 4693, 4921, 5187, 5439, 7581, 9139, 10101, 12103, 13357, 14079, 14763, 17689, 23569, 27417, 32851, 34447, 36309, 40071, 53067, 63973, 70707, 93499, 98553, 103341, 173641, 191919, 229957, 280497, 447811, 520923, 654493, 689871, 1215487, 1343433, 1963479, 3646461, 8508409, 25525227]

約数ペア:

[(1, 25525227), (3, 8508409), (7, 3646461), (13, 1963479), (19, 1343433), (21, 1215487), (37, 689871), (39, 654493), (49, 520923), (57, 447811), (91, 280497), (111, 229957), (133, 191919), (147, 173641), (247, 103341), (259, 98553), (273, 93499), (361, 70707), (399, 63973), (481, 53067), (637, 40071), (703, 36309), (741, 34447), (777, 32851), (931, 27417), (1083, 23569), (1443, 17689), (1729, 14763), (1813, 14079), (1911, 13357), (2109, 12103), (2527, 10101), (2793, 9139), (3367, 7581), (4693, 5439), (4921, 5187)]