21422475

素因数分解:

$3^4\times 5^2\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:242

約数の個数: 60

約数和(自身を含む): 40510800

約数和(自身を除く): 19088325

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 71, 75, 81, 135, 149, 213, 225, 355, 405, 447, 639, 675, 745, 1065, 1341, 1775, 1917, 2025, 2235, 3195, 3725, 4023, 5325, 5751, 6705, 9585, 10579, 11175, 12069, 15975, 20115, 28755, 31737, 33525, 47925, 52895, 60345, 95211, 100575, 143775, 158685, 264475, 285633, 301725, 476055, 793425, 856899, 1428165, 2380275, 4284495, 7140825, 21422475]

約数ペア:

[(1, 21422475), (3, 7140825), (5, 4284495), (9, 2380275), (15, 1428165), (25, 856899), (27, 793425), (45, 476055), (71, 301725), (75, 285633), (81, 264475), (135, 158685), (149, 143775), (213, 100575), (225, 95211), (355, 60345), (405, 52895), (447, 47925), (639, 33525), (675, 31737), (745, 28755), (1065, 20115), (1341, 15975), (1775, 12069), (1917, 11175), (2025, 10579), (2235, 9585), (3195, 6705), (3725, 5751), (4023, 5325)]