121206920

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{15227}}^1$

素因数の和:15437

約数の個数: 32

約数和(自身を含む): 274104000

約数和(自身を除く): 152897080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 15227, 30454, 60908, 76135, 121816, 152270, 304540, 609080, 3030173, 6060346, 12120692, 15150865, 24241384, 30301730, 60603460, 121206920]

約数ペア:

[(1, 121206920), (2, 60603460), (4, 30301730), (5, 24241384), (8, 15150865), (10, 12120692), (20, 6060346), (40, 3030173), (199, 609080), (398, 304540), (796, 152270), (995, 121816), (1592, 76135), (1990, 60908), (3980, 30454), (7960, 15227)]