21779145

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{5563}}^1$

素因数の和:5606

約数の個数: 32

約数和(自身を含む): 40060800

約数和(自身を除く): 18281655

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 5563, 16689, 27815, 50067, 83445, 150201, 161327, 250335, 483981, 751005, 806635, 1451943, 2419905, 4355829, 7259715, 21779145]

約数ペア:

[(1, 21779145), (3, 7259715), (5, 4355829), (9, 2419905), (15, 1451943), (27, 806635), (29, 751005), (45, 483981), (87, 250335), (135, 161327), (145, 150201), (261, 83445), (435, 50067), (783, 27815), (1305, 16689), (3915, 5563)]