2021840

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:339

約数の個数: 40

約数和(自身を含む): 4761600

約数和(自身を除く): 2739760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 199, 254, 398, 508, 635, 796, 995, 1016, 1270, 1592, 1990, 2032, 2540, 3184, 3980, 5080, 7960, 10160, 15920, 25273, 50546, 101092, 126365, 202184, 252730, 404368, 505460, 1010920, 2021840]

約数ペア:

[(1, 2021840), (2, 1010920), (4, 505460), (5, 404368), (8, 252730), (10, 202184), (16, 126365), (20, 101092), (40, 50546), (80, 25273), (127, 15920), (199, 10160), (254, 7960), (398, 5080), (508, 3980), (635, 3184), (796, 2540), (995, 2032), (1016, 1990), (1270, 1592)]