21784275

素因数分解:

$3^3\times 5^2\times {\mathrm{59}}^1\times {\mathrm{547}}^1$

素因数の和:625

約数の個数: 48

約数和(自身を含む): 40771200

約数和(自身を除く): 18986925

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 59, 75, 135, 177, 225, 295, 531, 547, 675, 885, 1475, 1593, 1641, 2655, 2735, 4425, 4923, 7965, 8205, 13275, 13675, 14769, 24615, 32273, 39825, 41025, 73845, 96819, 123075, 161365, 290457, 369225, 484095, 806825, 871371, 1452285, 2420475, 4356855, 7261425, 21784275]

約数ペア:

[(1, 21784275), (3, 7261425), (5, 4356855), (9, 2420475), (15, 1452285), (25, 871371), (27, 806825), (45, 484095), (59, 369225), (75, 290457), (135, 161365), (177, 123075), (225, 96819), (295, 73845), (531, 41025), (547, 39825), (675, 32273), (885, 24615), (1475, 14769), (1593, 13675), (1641, 13275), (2655, 8205), (2735, 7965), (4425, 4923)]