208689520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6473}}^1$

素因数の和:6530

約数の個数: 80

約数和(自身を含む): 539465472

約数和(自身を除く): 330775952

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 6473, 8060, 12946, 16120, 25892, 32240, 32365, 51784, 64730, 84149, 103568, 129460, 168298, 200663, 258920, 336596, 401326, 420745, 517840, 673192, 802652, 841490, 1003315, 1346384, 1605304, 1682980, 2006630, 2608619, 3210608, 3365960, 4013260, 5217238, 6731920, 8026520, 10434476, 13043095, 16053040, 20868952, 26086190, 41737904, 52172380, 104344760, 208689520]

約数ペア:

[(1, 208689520), (2, 104344760), (4, 52172380), (5, 41737904), (8, 26086190), (10, 20868952), (13, 16053040), (16, 13043095), (20, 10434476), (26, 8026520), (31, 6731920), (40, 5217238), (52, 4013260), (62, 3365960), (65, 3210608), (80, 2608619), (104, 2006630), (124, 1682980), (130, 1605304), (155, 1346384), (208, 1003315), (248, 841490), (260, 802652), (310, 673192), (403, 517840), (496, 420745), (520, 401326), (620, 336596), (806, 258920), (1040, 200663), (1240, 168298), (1612, 129460), (2015, 103568), (2480, 84149), (3224, 64730), (4030, 51784), (6448, 32365), (6473, 32240), (8060, 25892), (12946, 16120)]