21636915

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{79}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 38131200

約数和(自身を除く): 16494285

約数列:

[1, 3, 5, 15, 19, 31, 57, 79, 93, 95, 155, 237, 285, 395, 465, 589, 961, 1185, 1501, 1767, 2449, 2883, 2945, 4503, 4805, 7347, 7505, 8835, 12245, 14415, 18259, 22515, 36735, 46531, 54777, 75919, 91295, 139593, 227757, 232655, 273885, 379595, 697965, 1138785, 1442461, 4327383, 7212305, 21636915]

約数ペア:

[(1, 21636915), (3, 7212305), (5, 4327383), (15, 1442461), (19, 1138785), (31, 697965), (57, 379595), (79, 273885), (93, 232655), (95, 227757), (155, 139593), (237, 91295), (285, 75919), (395, 54777), (465, 46531), (589, 36735), (961, 22515), (1185, 18259), (1501, 14415), (1767, 12245), (2449, 8835), (2883, 7505), (2945, 7347), (4503, 4805)]