389947640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{2129}}^1$

素因数の和:2400

約数の個数: 64

約数和(自身を含む): 927828000

約数和(自身を除く): 537880360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 241, 380, 482, 760, 964, 1205, 1928, 2129, 2410, 4258, 4579, 4820, 8516, 9158, 9640, 10645, 17032, 18316, 21290, 22895, 36632, 40451, 42580, 45790, 80902, 85160, 91580, 161804, 183160, 202255, 323608, 404510, 513089, 809020, 1026178, 1618040, 2052356, 2565445, 4104712, 5130890, 9748691, 10261780, 19497382, 20523560, 38994764, 48743455, 77989528, 97486910, 194973820, 389947640]

約数ペア:

[(1, 389947640), (2, 194973820), (4, 97486910), (5, 77989528), (8, 48743455), (10, 38994764), (19, 20523560), (20, 19497382), (38, 10261780), (40, 9748691), (76, 5130890), (95, 4104712), (152, 2565445), (190, 2052356), (241, 1618040), (380, 1026178), (482, 809020), (760, 513089), (964, 404510), (1205, 323608), (1928, 202255), (2129, 183160), (2410, 161804), (4258, 91580), (4579, 85160), (4820, 80902), (8516, 45790), (9158, 42580), (9640, 40451), (10645, 36632), (17032, 22895), (18316, 21290)]