21305525475

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{827}}^1\times {\mathrm{26423}}^1$

素因数の和:27276

約数の個数: 48

約数和(自身を含む): 37982068992

約数和(自身を除く): 16676543517

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 827, 975, 2481, 4135, 10751, 12405, 20675, 26423, 32253, 53755, 62025, 79269, 132115, 161265, 268775, 343499, 396345, 660575, 806325, 1030497, 1717495, 1981725, 5152485, 8587475, 21851821, 25762425, 65555463, 109259105, 284073673, 327777315, 546295525, 852221019, 1420368365, 1638886575, 4261105095, 7101841825, 21305525475]

約数ペア:

[(1, 21305525475), (3, 7101841825), (5, 4261105095), (13, 1638886575), (15, 1420368365), (25, 852221019), (39, 546295525), (65, 327777315), (75, 284073673), (195, 109259105), (325, 65555463), (827, 25762425), (975, 21851821), (2481, 8587475), (4135, 5152485), (10751, 1981725), (12405, 1717495), (20675, 1030497), (26423, 806325), (32253, 660575), (53755, 396345), (62025, 343499), (79269, 268775), (132115, 161265)]