31020171

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{83}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 52948224

約数和(自身を除く): 21928053

約数列:

[1, 3, 7, 13, 21, 37, 39, 83, 91, 111, 249, 259, 273, 481, 581, 777, 1079, 1369, 1443, 1743, 3071, 3237, 3367, 4107, 7553, 9213, 9583, 10101, 17797, 21497, 22659, 28749, 39923, 53391, 64491, 113627, 119769, 124579, 279461, 340881, 373737, 795389, 838383, 1477151, 2386167, 4431453, 10340057, 31020171]

約数ペア:

[(1, 31020171), (3, 10340057), (7, 4431453), (13, 2386167), (21, 1477151), (37, 838383), (39, 795389), (83, 373737), (91, 340881), (111, 279461), (249, 124579), (259, 119769), (273, 113627), (481, 64491), (581, 53391), (777, 39923), (1079, 28749), (1369, 22659), (1443, 21497), (1743, 17797), (3071, 10101), (3237, 9583), (3367, 9213), (4107, 7553)]