21970228

素因数分解:

$2^2\times 7^2\times {\mathrm{197}}^1\times {\mathrm{569}}^1$

素因数の和:784

約数の個数: 36

約数和(自身を含む): 45031140

約数和(自身を除く): 23060912

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 197, 394, 569, 788, 1138, 1379, 2276, 2758, 3983, 5516, 7966, 9653, 15932, 19306, 27881, 38612, 55762, 111524, 112093, 224186, 448372, 784651, 1569302, 3138604, 5492557, 10985114, 21970228]

約数ペア:

[(1, 21970228), (2, 10985114), (4, 5492557), (7, 3138604), (14, 1569302), (28, 784651), (49, 448372), (98, 224186), (196, 112093), (197, 111524), (394, 55762), (569, 38612), (788, 27881), (1138, 19306), (1379, 15932), (2276, 9653), (2758, 7966), (3983, 5516)]