21787344

素因数分解:

$2^4\times 3^2\times {\mathrm{71}}^1\times {\mathrm{2131}}^1$

素因数の和:2216

約数の個数: 60

約数和(自身を含む): 61862112

約数和(自身を除く): 40074768

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 71, 72, 142, 144, 213, 284, 426, 568, 639, 852, 1136, 1278, 1704, 2131, 2556, 3408, 4262, 5112, 6393, 8524, 10224, 12786, 17048, 19179, 25572, 34096, 38358, 51144, 76716, 102288, 151301, 153432, 302602, 306864, 453903, 605204, 907806, 1210408, 1361709, 1815612, 2420816, 2723418, 3631224, 5446836, 7262448, 10893672, 21787344]

約数ペア:

[(1, 21787344), (2, 10893672), (3, 7262448), (4, 5446836), (6, 3631224), (8, 2723418), (9, 2420816), (12, 1815612), (16, 1361709), (18, 1210408), (24, 907806), (36, 605204), (48, 453903), (71, 306864), (72, 302602), (142, 153432), (144, 151301), (213, 102288), (284, 76716), (426, 51144), (568, 38358), (639, 34096), (852, 25572), (1136, 19179), (1278, 17048), (1704, 12786), (2131, 10224), (2556, 8524), (3408, 6393), (4262, 5112)]