19776680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6421}}^1$

素因数の和:6450

約数の個数: 64

約数和(自身を含む): 55486080

約数和(自身を除く): 35709400

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6421, 12842, 25684, 32105, 44947, 51368, 64210, 70631, 89894, 128420, 141262, 179788, 224735, 256840, 282524, 353155, 359576, 449470, 494417, 565048, 706310, 898940, 988834, 1412620, 1797880, 1977668, 2472085, 2825240, 3955336, 4944170, 9888340, 19776680]

約数ペア:

[(1, 19776680), (2, 9888340), (4, 4944170), (5, 3955336), (7, 2825240), (8, 2472085), (10, 1977668), (11, 1797880), (14, 1412620), (20, 988834), (22, 898940), (28, 706310), (35, 565048), (40, 494417), (44, 449470), (55, 359576), (56, 353155), (70, 282524), (77, 256840), (88, 224735), (110, 179788), (140, 141262), (154, 128420), (220, 89894), (280, 70631), (308, 64210), (385, 51368), (440, 44947), (616, 32105), (770, 25684), (1540, 12842), (3080, 6421)]