21018250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{7643}}^1$

素因数の和:7671

約数の個数: 32

約数和(自身を含む): 42928704

約数和(自身を除く): 21910454

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 1375, 2750, 7643, 15286, 38215, 76430, 84073, 168146, 191075, 382150, 420365, 840730, 955375, 1910750, 2101825, 4203650, 10509125, 21018250]

約数ペア:

[(1, 21018250), (2, 10509125), (5, 4203650), (10, 2101825), (11, 1910750), (22, 955375), (25, 840730), (50, 420365), (55, 382150), (110, 191075), (125, 168146), (250, 84073), (275, 76430), (550, 38215), (1375, 15286), (2750, 7643)]