21306375

素因数分解:

$3^3\times 5^3\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:190

約数の個数: 64

約数和(自身を含む): 40435200

約数和(自身を除く): 19128825

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 59, 75, 107, 125, 135, 177, 225, 295, 321, 375, 531, 535, 675, 885, 963, 1125, 1475, 1593, 1605, 2655, 2675, 2889, 3375, 4425, 4815, 6313, 7375, 7965, 8025, 13275, 13375, 14445, 18939, 22125, 24075, 31565, 39825, 40125, 56817, 66375, 72225, 94695, 120375, 157825, 170451, 199125, 284085, 361125, 473475, 789125, 852255, 1420425, 2367375, 4261275, 7102125, 21306375]

約数ペア:

[(1, 21306375), (3, 7102125), (5, 4261275), (9, 2367375), (15, 1420425), (25, 852255), (27, 789125), (45, 473475), (59, 361125), (75, 284085), (107, 199125), (125, 170451), (135, 157825), (177, 120375), (225, 94695), (295, 72225), (321, 66375), (375, 56817), (531, 40125), (535, 39825), (675, 31565), (885, 24075), (963, 22125), (1125, 18939), (1475, 14445), (1593, 13375), (1605, 13275), (2655, 8025), (2675, 7965), (2889, 7375), (3375, 6313), (4425, 4815)]