21889505

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{373}}^1$

素因数の和:497

約数の個数: 24

約数和(自身を含む): 29248296

約数和(自身を除く): 7358791

約数列:

[1, 5, 11, 55, 97, 121, 373, 485, 605, 1067, 1865, 4103, 5335, 11737, 20515, 36181, 45133, 58685, 180905, 225665, 397991, 1989955, 4377901, 21889505]

約数ペア:

[(1, 21889505), (5, 4377901), (11, 1989955), (55, 397991), (97, 225665), (121, 180905), (373, 58685), (485, 45133), (605, 36181), (1067, 20515), (1865, 11737), (4103, 5335)]