20606895

素因数分解:

$3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2647}}^1$

素因数の和:2831

約数の個数: 24

約数和(自身を含む): 35938656

約数和(自身を除く): 15331761

約数列:

[1, 3, 5, 9, 15, 45, 173, 519, 865, 1557, 2595, 2647, 7785, 7941, 13235, 23823, 39705, 119115, 457931, 1373793, 2289655, 4121379, 6868965, 20606895]

約数ペア:

[(1, 20606895), (3, 6868965), (5, 4121379), (9, 2289655), (15, 1373793), (45, 457931), (173, 119115), (519, 39705), (865, 23823), (1557, 13235), (2595, 7941), (2647, 7785)]