31123071

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{457}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 54872064

約数和(自身を除く): 23748993

約数列:

[1, 3, 7, 9, 21, 23, 47, 63, 69, 141, 161, 207, 329, 423, 457, 483, 987, 1081, 1371, 1449, 2961, 3199, 3243, 4113, 7567, 9597, 9729, 10511, 21479, 22701, 28791, 31533, 64437, 68103, 73577, 94599, 150353, 193311, 220731, 451059, 494017, 662193, 1353177, 1482051, 3458119, 4446153, 10374357, 31123071]

約数ペア:

[(1, 31123071), (3, 10374357), (7, 4446153), (9, 3458119), (21, 1482051), (23, 1353177), (47, 662193), (63, 494017), (69, 451059), (141, 220731), (161, 193311), (207, 150353), (329, 94599), (423, 73577), (457, 68103), (483, 64437), (987, 31533), (1081, 28791), (1371, 22701), (1449, 21479), (2961, 10511), (3199, 9729), (3243, 9597), (4113, 7567)]