161400940

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1\times {\mathrm{379}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 344736000

約数和(自身を除く): 183335060

約数列:

[1, 2, 4, 5, 10, 20, 107, 199, 214, 379, 398, 428, 535, 758, 796, 995, 1070, 1516, 1895, 1990, 2140, 3790, 3980, 7580, 21293, 40553, 42586, 75421, 81106, 85172, 106465, 150842, 162212, 202765, 212930, 301684, 377105, 405530, 425860, 754210, 811060, 1508420, 8070047, 16140094, 32280188, 40350235, 80700470, 161400940]

約数ペア:

[(1, 161400940), (2, 80700470), (4, 40350235), (5, 32280188), (10, 16140094), (20, 8070047), (107, 1508420), (199, 811060), (214, 754210), (379, 425860), (398, 405530), (428, 377105), (535, 301684), (758, 212930), (796, 202765), (995, 162212), (1070, 150842), (1516, 106465), (1895, 85172), (1990, 81106), (2140, 75421), (3790, 42586), (3980, 40553), (7580, 21293)]