21731800

素因数分解:

$2^3\times 5^2\times {\mathrm{193}}^1\times {\mathrm{563}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 50878440

約数和(自身を除く): 29146640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 193, 200, 386, 563, 772, 965, 1126, 1544, 1930, 2252, 2815, 3860, 4504, 4825, 5630, 7720, 9650, 11260, 14075, 19300, 22520, 28150, 38600, 56300, 108659, 112600, 217318, 434636, 543295, 869272, 1086590, 2173180, 2716475, 4346360, 5432950, 10865900, 21731800]

約数ペア:

[(1, 21731800), (2, 10865900), (4, 5432950), (5, 4346360), (8, 2716475), (10, 2173180), (20, 1086590), (25, 869272), (40, 543295), (50, 434636), (100, 217318), (193, 112600), (200, 108659), (386, 56300), (563, 38600), (772, 28150), (965, 22520), (1126, 19300), (1544, 14075), (1930, 11260), (2252, 9650), (2815, 7720), (3860, 5630), (4504, 4825)]