20615955

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{571}}^1$

素因数の和:691

約数の個数: 32

約数和(自身を含む): 34594560

約数和(自身を除く): 13978605

約数列:

[1, 3, 5, 15, 29, 83, 87, 145, 249, 415, 435, 571, 1245, 1713, 2407, 2855, 7221, 8565, 12035, 16559, 36105, 47393, 49677, 82795, 142179, 236965, 248385, 710895, 1374397, 4123191, 6871985, 20615955]

約数ペア:

[(1, 20615955), (3, 6871985), (5, 4123191), (15, 1374397), (29, 710895), (83, 248385), (87, 236965), (145, 142179), (249, 82795), (415, 49677), (435, 47393), (571, 36105), (1245, 16559), (1713, 12035), (2407, 8565), (2855, 7221)]