21253275

素因数分解:

$3^2\times 5^2\times {\mathrm{59}}^1\times {\mathrm{1601}}^1$

素因数の和:1676

約数の個数: 36

約数和(自身を含む): 38736360

約数和(自身を除く): 17483085

約数列:

[1, 3, 5, 9, 15, 25, 45, 59, 75, 177, 225, 295, 531, 885, 1475, 1601, 2655, 4425, 4803, 8005, 13275, 14409, 24015, 40025, 72045, 94459, 120075, 283377, 360225, 472295, 850131, 1416885, 2361475, 4250655, 7084425, 21253275]

約数ペア:

[(1, 21253275), (3, 7084425), (5, 4250655), (9, 2361475), (15, 1416885), (25, 850131), (45, 472295), (59, 360225), (75, 283377), (177, 120075), (225, 94459), (295, 72045), (531, 40025), (885, 24015), (1475, 14409), (1601, 13275), (2655, 8005), (4425, 4803)]