21570741

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{307}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 32256224

約数和(自身を除く): 10685483

約数列:

[1, 3, 9, 37, 111, 211, 307, 333, 633, 921, 1899, 2763, 7807, 11359, 23421, 34077, 64777, 70263, 102231, 194331, 582993, 2396749, 7190247, 21570741]

約数ペア:

[(1, 21570741), (3, 7190247), (9, 2396749), (37, 582993), (111, 194331), (211, 102231), (307, 70263), (333, 64777), (633, 34077), (921, 23421), (1899, 11359), (2763, 7807)]