81071725

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^2\times {\mathrm{229}}^1$

素因数の和:287

約数の個数: 54

約数和(自身を含む): 124767870

約数和(自身を除く): 43696145

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 175, 229, 245, 289, 425, 595, 833, 1145, 1225, 1445, 1603, 2023, 2975, 3893, 4165, 5725, 7225, 8015, 10115, 11221, 14161, 19465, 20825, 27251, 40075, 50575, 56105, 66181, 70805, 97325, 136255, 190757, 280525, 330905, 354025, 463267, 681275, 953785, 1654525, 2316335, 3242869, 4768925, 11581675, 16214345, 81071725]

約数ペア:

[(1, 81071725), (5, 16214345), (7, 11581675), (17, 4768925), (25, 3242869), (35, 2316335), (49, 1654525), (85, 953785), (119, 681275), (175, 463267), (229, 354025), (245, 330905), (289, 280525), (425, 190757), (595, 136255), (833, 97325), (1145, 70805), (1225, 66181), (1445, 56105), (1603, 50575), (2023, 40075), (2975, 27251), (3893, 20825), (4165, 19465), (5725, 14161), (7225, 11221), (8015, 10115)]