21990123120

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{278497}}^1$

素因数の和:278567

約数の個数: 160

約数和(自身を含む): 79565764608

約数和(自身を除く): 57575641488

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 47, 48, 56, 60, 70, 80, 84, 94, 105, 112, 120, 140, 141, 168, 188, 210, 235, 240, 280, 282, 329, 336, 376, 420, 470, 560, 564, 658, 705, 752, 840, 940, 987, 1128, 1316, 1410, 1645, 1680, 1880, 1974, 2256, 2632, 2820, 3290, 3760, 3948, 4935, 5264, 5640, 6580, 7896, 9870, 11280, 13160, 15792, 19740, 26320, 39480, 78960, 278497, 556994, 835491, 1113988, 1392485, 1670982, 1949479, 2227976, 2784970, 3341964, 3898958, 4177455, 4455952, 5569940, 5848437, 6683928, 7797916, 8354910, 9747395, 11139880, 11696874, 13089359, 13367856, 15595832, 16709820, 19494790, 22279760, 23393748, 26178718, 29242185, 31191664, 33419640, 38989580, 39268077, 46787496, 52357436, 58484370, 65446795, 66839280, 77979160, 78536154, 91625513, 93574992, 104714872, 116968740, 130893590, 155958320, 157072308, 183251026, 196340385, 209429744, 233937480, 261787180, 274876539, 314144616, 366502052, 392680770, 458127565, 467874960, 523574360, 549753078, 628289232, 733004104, 785361540, 916255130, 1047148720, 1099506156, 1374382695, 1466008208, 1570723080, 1832510260, 2199012312, 2748765390, 3141446160, 3665020520, 4398024624, 5497530780, 7330041040, 10995061560, 21990123120]

約数ペア:

[(1, 21990123120), (2, 10995061560), (3, 7330041040), (4, 5497530780), (5, 4398024624), (6, 3665020520), (7, 3141446160), (8, 2748765390), (10, 2199012312), (12, 1832510260), (14, 1570723080), (15, 1466008208), (16, 1374382695), (20, 1099506156), (21, 1047148720), (24, 916255130), (28, 785361540), (30, 733004104), (35, 628289232), (40, 549753078), (42, 523574360), (47, 467874960), (48, 458127565), (56, 392680770), (60, 366502052), (70, 314144616), (80, 274876539), (84, 261787180), (94, 233937480), (105, 209429744), (112, 196340385), (120, 183251026), (140, 157072308), (141, 155958320), (168, 130893590), (188, 116968740), (210, 104714872), (235, 93574992), (240, 91625513), (280, 78536154), (282, 77979160), (329, 66839280), (336, 65446795), (376, 58484370), (420, 52357436), (470, 46787496), (560, 39268077), (564, 38989580), (658, 33419640), (705, 31191664), (752, 29242185), (840, 26178718), (940, 23393748), (987, 22279760), (1128, 19494790), (1316, 16709820), (1410, 15595832), (1645, 13367856), (1680, 13089359), (1880, 11696874), (1974, 11139880), (2256, 9747395), (2632, 8354910), (2820, 7797916), (3290, 6683928), (3760, 5848437), (3948, 5569940), (4935, 4455952), (5264, 4177455), (5640, 3898958), (6580, 3341964), (7896, 2784970), (9870, 2227976), (11280, 1949479), (13160, 1670982), (15792, 1392485), (19740, 1113988), (26320, 835491), (39480, 556994), (78960, 278497)]