19741540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10847}}^1$

素因数の和:10876

約数の個数: 48

約数和(自身を含む): 51028992

約数和(自身を除く): 31287452

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10847, 21694, 43388, 54235, 75929, 108470, 141011, 151858, 216940, 282022, 303716, 379645, 564044, 705055, 759290, 987077, 1410110, 1518580, 1974154, 2820220, 3948308, 4935385, 9870770, 19741540]

約数ペア:

[(1, 19741540), (2, 9870770), (4, 4935385), (5, 3948308), (7, 2820220), (10, 1974154), (13, 1518580), (14, 1410110), (20, 987077), (26, 759290), (28, 705055), (35, 564044), (52, 379645), (65, 303716), (70, 282022), (91, 216940), (130, 151858), (140, 141011), (182, 108470), (260, 75929), (364, 54235), (455, 43388), (910, 21694), (1820, 10847)]