21397350

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{10973}}^1$

素因数の和:11001

約数の個数: 48

約数和(自身を含む): 57152592

約数和(自身を除く): 35755242

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 195, 325, 390, 650, 975, 1950, 10973, 21946, 32919, 54865, 65838, 109730, 142649, 164595, 274325, 285298, 329190, 427947, 548650, 713245, 822975, 855894, 1426490, 1645950, 2139735, 3566225, 4279470, 7132450, 10698675, 21397350]

約数ペア:

[(1, 21397350), (2, 10698675), (3, 7132450), (5, 4279470), (6, 3566225), (10, 2139735), (13, 1645950), (15, 1426490), (25, 855894), (26, 822975), (30, 713245), (39, 548650), (50, 427947), (65, 329190), (75, 285298), (78, 274325), (130, 164595), (150, 142649), (195, 109730), (325, 65838), (390, 54865), (650, 32919), (975, 21946), (1950, 10973)]