21747165

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7753}}^1$

素因数の和:7789

約数の個数: 32

約数和(自身を含む): 40196736

約数和(自身を除く): 18449571

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 7753, 23259, 38765, 85283, 116295, 131801, 255849, 395403, 426415, 659005, 1279245, 1449811, 1977015, 4349433, 7249055, 21747165]

約数ペア:

[(1, 21747165), (3, 7249055), (5, 4349433), (11, 1977015), (15, 1449811), (17, 1279245), (33, 659005), (51, 426415), (55, 395403), (85, 255849), (165, 131801), (187, 116295), (255, 85283), (561, 38765), (935, 23259), (2805, 7753)]