21484780

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{4691}}^1$

素因数の和:4929

約数の個数: 24

約数和(自身を含む): 45324720

約数和(自身を除く): 23839940

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4580, 4691, 9382, 18764, 23455, 46910, 93820, 1074239, 2148478, 4296956, 5371195, 10742390, 21484780]

約数ペア:

[(1, 21484780), (2, 10742390), (4, 5371195), (5, 4296956), (10, 2148478), (20, 1074239), (229, 93820), (458, 46910), (916, 23455), (1145, 18764), (2290, 9382), (4580, 4691)]