21959504

素因数分解:

$2^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2203}}^1$

素因数の和:2307

約数の個数: 40

約数和(自身を含む): 49193280

約数和(自身を除く): 27233776

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 89, 112, 178, 356, 623, 712, 1246, 1424, 2203, 2492, 4406, 4984, 8812, 9968, 15421, 17624, 30842, 35248, 61684, 123368, 196067, 246736, 392134, 784268, 1372469, 1568536, 2744938, 3137072, 5489876, 10979752, 21959504]

約数ペア:

[(1, 21959504), (2, 10979752), (4, 5489876), (7, 3137072), (8, 2744938), (14, 1568536), (16, 1372469), (28, 784268), (56, 392134), (89, 246736), (112, 196067), (178, 123368), (356, 61684), (623, 35248), (712, 30842), (1246, 17624), (1424, 15421), (2203, 9968), (2492, 8812), (4406, 4984)]