21533985

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{853}}^1$

素因数の和:895

約数の個数: 64

約数和(自身を含む): 44271360

約数和(自身を除く): 22737375

約数列:

[1, 3, 5, 9, 11, 15, 17, 27, 33, 45, 51, 55, 85, 99, 135, 153, 165, 187, 255, 297, 459, 495, 561, 765, 853, 935, 1485, 1683, 2295, 2559, 2805, 4265, 5049, 7677, 8415, 9383, 12795, 14501, 23031, 25245, 28149, 38385, 43503, 46915, 72505, 84447, 115155, 130509, 140745, 159511, 217515, 253341, 391527, 422235, 478533, 652545, 797555, 1266705, 1435599, 1957635, 2392665, 4306797, 7177995, 21533985]

約数ペア:

[(1, 21533985), (3, 7177995), (5, 4306797), (9, 2392665), (11, 1957635), (15, 1435599), (17, 1266705), (27, 797555), (33, 652545), (45, 478533), (51, 422235), (55, 391527), (85, 253341), (99, 217515), (135, 159511), (153, 140745), (165, 130509), (187, 115155), (255, 84447), (297, 72505), (459, 46915), (495, 43503), (561, 38385), (765, 28149), (853, 25245), (935, 23031), (1485, 14501), (1683, 12795), (2295, 9383), (2559, 8415), (2805, 7677), (4265, 5049)]