19786249980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^3\times {\mathrm{320477}}^1$

素因数の和:320513

約数の個数: 144

約数和(自身を含む): 69992395200

約数和(自身を除く): 50206145220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 343, 420, 441, 490, 588, 630, 686, 735, 882, 980, 1029, 1260, 1372, 1470, 1715, 1764, 2058, 2205, 2940, 3087, 3430, 4116, 4410, 5145, 6174, 6860, 8820, 10290, 12348, 15435, 20580, 30870, 61740, 320477, 640954, 961431, 1281908, 1602385, 1922862, 2243339, 2884293, 3204770, 3845724, 4486678, 4807155, 5768586, 6409540, 6730017, 8973356, 9614310, 11216695, 11537172, 13460034, 14421465, 15703373, 19228620, 20190051, 22433390, 26920068, 28842930, 31406746, 33650085, 40380102, 44866780, 47110119, 57685860, 62813492, 67300170, 78516865, 80760204, 94220238, 100950255, 109923611, 134600340, 141330357, 157033730, 188440476, 201900510, 219847222, 235550595, 282660714, 314067460, 329770833, 403801020, 439694444, 471101190, 549618055, 565321428, 659541666, 706651785, 942202380, 989312499, 1099236110, 1319083332, 1413303570, 1648854165, 1978624998, 2198472220, 2826607140, 3297708330, 3957249996, 4946562495, 6595416660, 9893124990, 19786249980]

約数ペア:

[(1, 19786249980), (2, 9893124990), (3, 6595416660), (4, 4946562495), (5, 3957249996), (6, 3297708330), (7, 2826607140), (9, 2198472220), (10, 1978624998), (12, 1648854165), (14, 1413303570), (15, 1319083332), (18, 1099236110), (20, 989312499), (21, 942202380), (28, 706651785), (30, 659541666), (35, 565321428), (36, 549618055), (42, 471101190), (45, 439694444), (49, 403801020), (60, 329770833), (63, 314067460), (70, 282660714), (84, 235550595), (90, 219847222), (98, 201900510), (105, 188440476), (126, 157033730), (140, 141330357), (147, 134600340), (180, 109923611), (196, 100950255), (210, 94220238), (245, 80760204), (252, 78516865), (294, 67300170), (315, 62813492), (343, 57685860), (420, 47110119), (441, 44866780), (490, 40380102), (588, 33650085), (630, 31406746), (686, 28842930), (735, 26920068), (882, 22433390), (980, 20190051), (1029, 19228620), (1260, 15703373), (1372, 14421465), (1470, 13460034), (1715, 11537172), (1764, 11216695), (2058, 9614310), (2205, 8973356), (2940, 6730017), (3087, 6409540), (3430, 5768586), (4116, 4807155), (4410, 4486678), (5145, 3845724), (6174, 3204770), (6860, 2884293), (8820, 2243339), (10290, 1922862), (12348, 1602385), (15435, 1281908), (20580, 961431), (30870, 640954), (61740, 320477)]