81188515

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{229}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 107110080

約数和(自身を除く): 25921565

約数列:

[1, 5, 17, 43, 85, 97, 215, 229, 485, 731, 1145, 1649, 3655, 3893, 4171, 8245, 9847, 19465, 20855, 22213, 49235, 70907, 111065, 167399, 354535, 377621, 836995, 955159, 1888105, 4775795, 16237703, 81188515]

約数ペア:

[(1, 81188515), (5, 16237703), (17, 4775795), (43, 1888105), (85, 955159), (97, 836995), (215, 377621), (229, 354535), (485, 167399), (731, 111065), (1145, 70907), (1649, 49235), (3655, 22213), (3893, 20855), (4171, 19465), (8245, 9847)]