21396430

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17683}}^1$

素因数の和:17712

約数の個数: 24

約数和(自身を含む): 42335496

約数和(自身を除く): 20939066

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 17683, 35366, 88415, 176830, 194513, 389026, 972565, 1945130, 2139643, 4279286, 10698215, 21396430]

約数ペア:

[(1, 21396430), (2, 10698215), (5, 4279286), (10, 2139643), (11, 1945130), (22, 972565), (55, 389026), (110, 194513), (121, 176830), (242, 88415), (605, 35366), (1210, 17683)]