31681265

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 51425280

約数和(自身を除く): 19744015

約数列:

[1, 5, 7, 11, 19, 35, 55, 61, 71, 77, 95, 133, 209, 305, 355, 385, 427, 497, 665, 671, 781, 1045, 1159, 1349, 1463, 2135, 2485, 3355, 3905, 4331, 4697, 5467, 5795, 6745, 7315, 8113, 9443, 12749, 14839, 21655, 23485, 27335, 30317, 40565, 47215, 47641, 63745, 74195, 82289, 89243, 103873, 151585, 238205, 333487, 411445, 446215, 519365, 576023, 905179, 1667435, 2880115, 4525895, 6336253, 31681265]

約数ペア:

[(1, 31681265), (5, 6336253), (7, 4525895), (11, 2880115), (19, 1667435), (35, 905179), (55, 576023), (61, 519365), (71, 446215), (77, 411445), (95, 333487), (133, 238205), (209, 151585), (305, 103873), (355, 89243), (385, 82289), (427, 74195), (497, 63745), (665, 47641), (671, 47215), (781, 40565), (1045, 30317), (1159, 27335), (1349, 23485), (1463, 21655), (2135, 14839), (2485, 12749), (3355, 9443), (3905, 8113), (4331, 7315), (4697, 6745), (5467, 5795)]