21917475

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3359}}^1$

素因数の和:3404

約数の個数: 36

約数和(自身を含む): 40622400

約数和(自身を除く): 18704925

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 145, 225, 261, 435, 725, 1305, 2175, 3359, 6525, 10077, 16795, 30231, 50385, 83975, 97411, 151155, 251925, 292233, 487055, 755775, 876699, 1461165, 2435275, 4383495, 7305825, 21917475]

約数ペア:

[(1, 21917475), (3, 7305825), (5, 4383495), (9, 2435275), (15, 1461165), (25, 876699), (29, 755775), (45, 487055), (75, 292233), (87, 251925), (145, 151155), (225, 97411), (261, 83975), (435, 50385), (725, 30231), (1305, 16795), (2175, 10077), (3359, 6525)]