20657520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2207}}^1$

素因数の和:2239

約数の個数: 120

約数和(自身を含む): 74745216

約数和(自身を除く): 54087696

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 2207, 2340, 3120, 4414, 4680, 6621, 8828, 9360, 11035, 13242, 17656, 19863, 22070, 26484, 28691, 33105, 35312, 39726, 44140, 52968, 57382, 66210, 79452, 86073, 88280, 99315, 105936, 114764, 132420, 143455, 158904, 172146, 176560, 198630, 229528, 258219, 264840, 286910, 317808, 344292, 397260, 430365, 459056, 516438, 529680, 573820, 688584, 794520, 860730, 1032876, 1147640, 1291095, 1377168, 1589040, 1721460, 2065752, 2295280, 2582190, 3442920, 4131504, 5164380, 6885840, 10328760, 20657520]

約数ペア:

[(1, 20657520), (2, 10328760), (3, 6885840), (4, 5164380), (5, 4131504), (6, 3442920), (8, 2582190), (9, 2295280), (10, 2065752), (12, 1721460), (13, 1589040), (15, 1377168), (16, 1291095), (18, 1147640), (20, 1032876), (24, 860730), (26, 794520), (30, 688584), (36, 573820), (39, 529680), (40, 516438), (45, 459056), (48, 430365), (52, 397260), (60, 344292), (65, 317808), (72, 286910), (78, 264840), (80, 258219), (90, 229528), (104, 198630), (117, 176560), (120, 172146), (130, 158904), (144, 143455), (156, 132420), (180, 114764), (195, 105936), (208, 99315), (234, 88280), (240, 86073), (260, 79452), (312, 66210), (360, 57382), (390, 52968), (468, 44140), (520, 39726), (585, 35312), (624, 33105), (720, 28691), (780, 26484), (936, 22070), (1040, 19863), (1170, 17656), (1560, 13242), (1872, 11035), (2207, 9360), (2340, 8828), (3120, 6621), (4414, 4680)]