81145675

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{773}}^1$

素因数の和:832

約数の個数: 48

約数和(自身を含む): 120929760

約数和(自身を除く): 39784085

約数列:

[1, 5, 13, 17, 19, 25, 65, 85, 95, 221, 247, 323, 325, 425, 475, 773, 1105, 1235, 1615, 3865, 4199, 5525, 6175, 8075, 10049, 13141, 14687, 19325, 20995, 50245, 65705, 73435, 104975, 170833, 190931, 249679, 251225, 328525, 367175, 854165, 954655, 1248395, 3245827, 4270825, 4773275, 6241975, 16229135, 81145675]

約数ペア:

[(1, 81145675), (5, 16229135), (13, 6241975), (17, 4773275), (19, 4270825), (25, 3245827), (65, 1248395), (85, 954655), (95, 854165), (221, 367175), (247, 328525), (323, 251225), (325, 249679), (425, 190931), (475, 170833), (773, 104975), (1105, 73435), (1235, 65705), (1615, 50245), (3865, 20995), (4199, 19325), (5525, 14687), (6175, 13141), (8075, 10049)]