40651720

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{5107}}^1$

素因数の和:5317

約数の個数: 32

約数和(自身を含む): 91944000

約数和(自身を除く): 51292280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 5107, 7960, 10214, 20428, 25535, 40856, 51070, 102140, 204280, 1016293, 2032586, 4065172, 5081465, 8130344, 10162930, 20325860, 40651720]

約数ペア:

[(1, 40651720), (2, 20325860), (4, 10162930), (5, 8130344), (8, 5081465), (10, 4065172), (20, 2032586), (40, 1016293), (199, 204280), (398, 102140), (796, 51070), (995, 40856), (1592, 25535), (1990, 20428), (3980, 10214), (5107, 7960)]