21204464

素因数分解:

$2^4\times {\mathrm{619}}^1\times {\mathrm{2141}}^1$

素因数の和:2768

約数の個数: 20

約数和(自身を含む): 41169240

約数和(自身を除く): 19964776

約数列:

[1, 2, 4, 8, 16, 619, 1238, 2141, 2476, 4282, 4952, 8564, 9904, 17128, 34256, 1325279, 2650558, 5301116, 10602232, 21204464]

約数ペア:

[(1, 21204464), (2, 10602232), (4, 5301116), (8, 2650558), (16, 1325279), (619, 34256), (1238, 17128), (2141, 9904), (2476, 8564), (4282, 4952)]