20794620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{643}}^1$

素因数の和:680

約数の個数: 144

約数和(自身を含む): 74003328

約数和(自身を除く): 53208708

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 49, 55, 60, 66, 70, 77, 84, 98, 105, 110, 132, 140, 147, 154, 165, 196, 210, 220, 231, 245, 294, 308, 330, 385, 420, 462, 490, 539, 588, 643, 660, 735, 770, 924, 980, 1078, 1155, 1286, 1470, 1540, 1617, 1929, 2156, 2310, 2572, 2695, 2940, 3215, 3234, 3858, 4501, 4620, 5390, 6430, 6468, 7073, 7716, 8085, 9002, 9645, 10780, 12860, 13503, 14146, 16170, 18004, 19290, 21219, 22505, 27006, 28292, 31507, 32340, 35365, 38580, 42438, 45010, 49511, 54012, 63014, 67515, 70730, 84876, 90020, 94521, 99022, 106095, 126028, 135030, 141460, 148533, 157535, 189042, 198044, 212190, 247555, 270060, 297066, 315070, 346577, 378084, 424380, 472605, 495110, 594132, 630140, 693154, 742665, 945210, 990220, 1039731, 1386308, 1485330, 1732885, 1890420, 2079462, 2970660, 3465770, 4158924, 5198655, 6931540, 10397310, 20794620]

約数ペア:

[(1, 20794620), (2, 10397310), (3, 6931540), (4, 5198655), (5, 4158924), (6, 3465770), (7, 2970660), (10, 2079462), (11, 1890420), (12, 1732885), (14, 1485330), (15, 1386308), (20, 1039731), (21, 990220), (22, 945210), (28, 742665), (30, 693154), (33, 630140), (35, 594132), (42, 495110), (44, 472605), (49, 424380), (55, 378084), (60, 346577), (66, 315070), (70, 297066), (77, 270060), (84, 247555), (98, 212190), (105, 198044), (110, 189042), (132, 157535), (140, 148533), (147, 141460), (154, 135030), (165, 126028), (196, 106095), (210, 99022), (220, 94521), (231, 90020), (245, 84876), (294, 70730), (308, 67515), (330, 63014), (385, 54012), (420, 49511), (462, 45010), (490, 42438), (539, 38580), (588, 35365), (643, 32340), (660, 31507), (735, 28292), (770, 27006), (924, 22505), (980, 21219), (1078, 19290), (1155, 18004), (1286, 16170), (1470, 14146), (1540, 13503), (1617, 12860), (1929, 10780), (2156, 9645), (2310, 9002), (2572, 8085), (2695, 7716), (2940, 7073), (3215, 6468), (3234, 6430), (3858, 5390), (4501, 4620)]