813644980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{7901}}^1$

素因数の和:8200

約数の個数: 48

約数和(自身を含む): 1805448960

約数和(自身を除く): 991803980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 271, 380, 542, 1084, 1355, 2710, 5149, 5420, 7901, 10298, 15802, 20596, 25745, 31604, 39505, 51490, 79010, 102980, 150119, 158020, 300238, 600476, 750595, 1501190, 2141171, 3002380, 4282342, 8564684, 10705855, 21411710, 40682249, 42823420, 81364498, 162728996, 203411245, 406822490, 813644980]

約数ペア:

[(1, 813644980), (2, 406822490), (4, 203411245), (5, 162728996), (10, 81364498), (19, 42823420), (20, 40682249), (38, 21411710), (76, 10705855), (95, 8564684), (190, 4282342), (271, 3002380), (380, 2141171), (542, 1501190), (1084, 750595), (1355, 600476), (2710, 300238), (5149, 158020), (5420, 150119), (7901, 102980), (10298, 79010), (15802, 51490), (20596, 39505), (25745, 31604)]