81939645

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1697}}^1$

素因数の和:1774

約数の個数: 48

約数和(自身を含む): 150986160

約数和(自身を除く): 69046515

約数列:

[1, 3, 5, 9, 15, 29, 37, 45, 87, 111, 145, 185, 261, 333, 435, 555, 1073, 1305, 1665, 1697, 3219, 5091, 5365, 8485, 9657, 15273, 16095, 25455, 48285, 49213, 62789, 76365, 147639, 188367, 246065, 313945, 442917, 565101, 738195, 941835, 1820881, 2214585, 2825505, 5462643, 9104405, 16387929, 27313215, 81939645]

約数ペア:

[(1, 81939645), (3, 27313215), (5, 16387929), (9, 9104405), (15, 5462643), (29, 2825505), (37, 2214585), (45, 1820881), (87, 941835), (111, 738195), (145, 565101), (185, 442917), (261, 313945), (333, 246065), (435, 188367), (555, 147639), (1073, 76365), (1305, 62789), (1665, 49213), (1697, 48285), (3219, 25455), (5091, 16095), (5365, 15273), (8485, 9657)]