81863145

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19991}}^1$

素因数の和:20022

約数の個数: 48

約数和(自身を含む): 174650112

約数和(自身を除く): 92786967

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 19991, 59973, 99955, 139937, 179919, 259883, 299865, 419811, 699685, 779649, 899595, 1259433, 1299415, 1819181, 2099055, 2338947, 3898245, 5457543, 6297165, 9095905, 11694735, 16372629, 27287715, 81863145]

約数ペア:

[(1, 81863145), (3, 27287715), (5, 16372629), (7, 11694735), (9, 9095905), (13, 6297165), (15, 5457543), (21, 3898245), (35, 2338947), (39, 2099055), (45, 1819181), (63, 1299415), (65, 1259433), (91, 899595), (105, 779649), (117, 699685), (195, 419811), (273, 299865), (315, 259883), (455, 179919), (585, 139937), (819, 99955), (1365, 59973), (4095, 19991)]