221480655

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{7759}}^1$

素因数の和:7951

約数の個数: 32

約数和(自身を含む): 388869120

約数和(自身を除く): 167388465

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 173, 519, 865, 1903, 2595, 5709, 7759, 9515, 23277, 28545, 38795, 85349, 116385, 256047, 426745, 1280235, 1342307, 4026921, 6711535, 14765377, 20134605, 44296131, 73826885, 221480655]

約数ペア:

[(1, 221480655), (3, 73826885), (5, 44296131), (11, 20134605), (15, 14765377), (33, 6711535), (55, 4026921), (165, 1342307), (173, 1280235), (519, 426745), (865, 256047), (1903, 116385), (2595, 85349), (5709, 38795), (7759, 28545), (9515, 23277)]