268731640

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1\times {\mathrm{509}}^1$

素因数の和:784

約数の個数: 64

約数和(自身を含む): 617997600

約数和(自身を除く): 349265960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 197, 268, 335, 394, 509, 536, 670, 788, 985, 1018, 1340, 1576, 1970, 2036, 2545, 2680, 3940, 4072, 5090, 7880, 10180, 13199, 20360, 26398, 34103, 52796, 65995, 68206, 100273, 105592, 131990, 136412, 170515, 200546, 263980, 272824, 341030, 401092, 501365, 527960, 682060, 802184, 1002730, 1364120, 2005460, 4010920, 6718291, 13436582, 26873164, 33591455, 53746328, 67182910, 134365820, 268731640]

約数ペア:

[(1, 268731640), (2, 134365820), (4, 67182910), (5, 53746328), (8, 33591455), (10, 26873164), (20, 13436582), (40, 6718291), (67, 4010920), (134, 2005460), (197, 1364120), (268, 1002730), (335, 802184), (394, 682060), (509, 527960), (536, 501365), (670, 401092), (788, 341030), (985, 272824), (1018, 263980), (1340, 200546), (1576, 170515), (1970, 136412), (2036, 131990), (2545, 105592), (2680, 100273), (3940, 68206), (4072, 65995), (5090, 52796), (7880, 34103), (10180, 26398), (13199, 20360)]