21217284

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{409}}^1$

素因数の和:561

約数の個数: 72

約数和(自身を含む): 59099040

約数和(自身を除く): 37881756

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 131, 132, 198, 262, 393, 396, 409, 524, 786, 818, 1179, 1227, 1441, 1572, 1636, 2358, 2454, 2882, 3681, 4323, 4499, 4716, 4908, 5764, 7362, 8646, 8998, 12969, 13497, 14724, 17292, 17996, 25938, 26994, 40491, 51876, 53579, 53988, 80982, 107158, 160737, 161964, 214316, 321474, 482211, 589369, 642948, 964422, 1178738, 1768107, 1928844, 2357476, 3536214, 5304321, 7072428, 10608642, 21217284]

約数ペア:

[(1, 21217284), (2, 10608642), (3, 7072428), (4, 5304321), (6, 3536214), (9, 2357476), (11, 1928844), (12, 1768107), (18, 1178738), (22, 964422), (33, 642948), (36, 589369), (44, 482211), (66, 321474), (99, 214316), (131, 161964), (132, 160737), (198, 107158), (262, 80982), (393, 53988), (396, 53579), (409, 51876), (524, 40491), (786, 26994), (818, 25938), (1179, 17996), (1227, 17292), (1441, 14724), (1572, 13497), (1636, 12969), (2358, 8998), (2454, 8646), (2882, 7362), (3681, 5764), (4323, 4908), (4499, 4716)]