21235220

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{9923}}^1$

素因数の和:10039

約数の個数: 24

約数和(自身を含む): 45015264

約数和(自身を除く): 23780044

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 9923, 19846, 39692, 49615, 99230, 198460, 1061761, 2123522, 4247044, 5308805, 10617610, 21235220]

約数ペア:

[(1, 21235220), (2, 10617610), (4, 5308805), (5, 4247044), (10, 2123522), (20, 1061761), (107, 198460), (214, 99230), (428, 49615), (535, 39692), (1070, 19846), (2140, 9923)]