20549500

素因数分解:

$2^2\times 5^3\times {\mathrm{73}}^1\times {\mathrm{563}}^1$

素因数の和:655

約数の個数: 48

約数和(自身を含む): 45575712

約数和(自身を除く): 25026212

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 73, 100, 125, 146, 250, 292, 365, 500, 563, 730, 1126, 1460, 1825, 2252, 2815, 3650, 5630, 7300, 9125, 11260, 14075, 18250, 28150, 36500, 41099, 56300, 70375, 82198, 140750, 164396, 205495, 281500, 410990, 821980, 1027475, 2054950, 4109900, 5137375, 10274750, 20549500]

約数ペア:

[(1, 20549500), (2, 10274750), (4, 5137375), (5, 4109900), (10, 2054950), (20, 1027475), (25, 821980), (50, 410990), (73, 281500), (100, 205495), (125, 164396), (146, 140750), (250, 82198), (292, 70375), (365, 56300), (500, 41099), (563, 36500), (730, 28150), (1126, 18250), (1460, 14075), (1825, 11260), (2252, 9125), (2815, 7300), (3650, 5630)]