21194650

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:399

約数の個数: 48

約数和(自身を含む): 41783040

約数和(自身を除く): 20588390

約数列:

[1, 2, 5, 10, 25, 29, 47, 50, 58, 94, 145, 235, 290, 311, 470, 622, 725, 1175, 1363, 1450, 1555, 2350, 2726, 3110, 6815, 7775, 9019, 13630, 14617, 15550, 18038, 29234, 34075, 45095, 68150, 73085, 90190, 146170, 225475, 365425, 423893, 450950, 730850, 847786, 2119465, 4238930, 10597325, 21194650]

約数ペア:

[(1, 21194650), (2, 10597325), (5, 4238930), (10, 2119465), (25, 847786), (29, 730850), (47, 450950), (50, 423893), (58, 365425), (94, 225475), (145, 146170), (235, 90190), (290, 73085), (311, 68150), (470, 45095), (622, 34075), (725, 29234), (1175, 18038), (1363, 15550), (1450, 14617), (1555, 13630), (2350, 9019), (2726, 7775), (3110, 6815)]