21436168

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3889}}^1$

素因数の和:3961

約数の個数: 32

約数和(自身を含む): 44112600

約数和(自身を除く): 22676432

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 212, 424, 689, 1378, 2756, 3889, 5512, 7778, 15556, 31112, 50557, 101114, 202228, 206117, 404456, 412234, 824468, 1648936, 2679521, 5359042, 10718084, 21436168]

約数ペア:

[(1, 21436168), (2, 10718084), (4, 5359042), (8, 2679521), (13, 1648936), (26, 824468), (52, 412234), (53, 404456), (104, 206117), (106, 202228), (212, 101114), (424, 50557), (689, 31112), (1378, 15556), (2756, 7778), (3889, 5512)]