21852489

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 10403511

約数列:

[1, 3, 19, 31, 57, 83, 93, 149, 249, 447, 589, 1577, 1767, 2573, 2831, 4619, 4731, 7719, 8493, 12367, 13857, 37101, 48887, 87761, 146661, 234973, 263283, 383377, 704919, 1150131, 7284163, 21852489]

約数ペア:

[(1, 21852489), (3, 7284163), (19, 1150131), (31, 704919), (57, 383377), (83, 263283), (93, 234973), (149, 146661), (249, 87761), (447, 48887), (589, 37101), (1577, 13857), (1767, 12367), (2573, 8493), (2831, 7719), (4619, 4731)]